Addition and Subtraction

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#### Level contents

- * Assessment for the whole of Level 4
- ** Assessment test answers
- *** Assessment test records
- 4:00 Concept Dictionary - Addition and Sub...
- Teaching points extracted from worksheets showing the development of addition and subtraction concepts from Year 0 to Year 6
- 4:01 Addition and subtraction
- Complete 2 digit subtraction and addition algorithms, decimals and problems. Use calculator to check answers. Discuss other ways to check answers..
- 4:01E Addition and subtraction
- Extension page. Years and place value. 3 and 4 line addition algorithms. Doubling and near doubling strategy practice. Write 5 two-digit numbers that total under 100. Write 4 two-digit numbers that subtract from 60 leaving zero. Fill in the missing numbers.
- 4:02 Addition and subtraction
- Addition and subtraction algorithms, trading. Calculate and compare distances.
- 4:03 Addition and subtraction strategies
- Match each question to the position of its answer on the number line. Fill in the missing number. Use the split strategy and the jump strategy.
- 4:04 Inverse operations
- Complete algorithms and check using inverse operation. Check answers to given questions using a calculator and inverse operation.
- 4:05 Addition, 3 digits, no trading
- 3-digit number addition algorithms, no trading.
- 4:05E Addition of more than two numbers
- Extension page. Multi-line additions of 3-digit numbers, with and without trading.
- 4:05PT Progress test
- Test of Addition and Subtraction
- 4:06 Addition with one trade
- Addition with one trade, using concrete materials, if needed. Check answers using inverse operations.
- 4:07 Subtraction, 3 digits, no trading
- Write the number represented by Base 10 blocks and subtract 120. Complete algorithms. Write a number story.
- 4:08 Subtraction with trading
- Complete algorithms and use jump or split strategy to check.
- 4:08C Subtraction with trading
- Complete algorithms and use jump or split strategy, or inverse operations, to check.
- 4:09 Rounding to estimate answers
- Round numbers to nearest 10, add estimates. Find area by estimating and then adding actuals. Complete algorithms manually or using a calculator and check answers by rounding.
- 4:10 Addition, 3 digits, one trade
- Addition, 3 digits, one trade.
- 4:11 Addition, 3 digits
- Addition, 3 digits, trading. Problem solving.
- 4:11E Addition of four numbers
- Extension page. Estimate and add multiple line algorithms with trading. Explore changing a calculator display. Estimate how many days you've been alive. Write an algorithm to find exact number.
- 4:12 Addition with two trades
- Complete addition algorithms and problems that have 2 trades.
- 4:12PT Progress test
- Test of Addition and Subtraction
- 4:13 Addition with trading
- Complete 3-digit addition algorithms and problems that require trading.
- 4:13E Addition up to five numbers
- Extension page. Practise adding up to 5 numbers with trading. Make number sentences.
- 4:14 Addition strategies
- Practise addition strategies - Bridging decades, changing order of addends, compensation strategy
- 4:14E Mental strategies for addition
- Extension page. Mental addition using jump strategy, bridging decades, associative strategy, compensation strategy.
- 4:15 Subtraction, 3 digits, one trade
- Complete 3-digit subtractions with one trade and make up number stories. Complete algorithms and check using jump strategy.
- 4:16 Subtraction with trading
- Complete 3-digit subtractions, with trading, including money. Complete problems.
- 4:16C Subtraction with trading
- Complete 3-digit subtractions with trading.
- 4:16EA Adding millilitres and litres
- Extension page. Add litres and millilitres.
- 4:16EB Shopping
- Extension page. Find change by counting on. Find totals and change. Spend $5.
- 4:17 Estimating with addition
- Estimate answer by rounding to nearest 100 and complete. Complete algorithm and check by rounding. Find an estimate, then use a calculator to complete.
- 4:18 Estimating with subtraction
- Estimate answers to subtractions by rounding and complete. State reasonableness of answer. Complete algorithms and estimate to check. Estimate answers and check with a calculator.
- 4:19 Addition and subtraction strategies
- Use jump, split and patterns strategies to add and subtract.
- 4:20 Addition and subtraction
- Complete addition and subtraction questions and check using inverse operation. Circle incorrect answers to given algorithms and write correct answers.
- 4:20C Addition and subtraction
- Complete addition and subtraction questions and check using inverse operation. Write the missing numbers in given algorithms to get correct answers.
- 4:20E Addition
- Extension page. Complete algorithms, looking for tens. State what the questions could be about e.g. temperatures, heights. Write algorithms for headings e.g. length of fingers on left hand.
- 4:21 Subtraction from 100s
- Explore ways to subtract from hundreds - decomposition, working mentally, part decomposition, equal addends.
- 4:22 Subtraction from 100s
- Practise ways to subtract from hundreds - decomposition, working mentally, part decomposition, equal addends.
- 4:22C Giving change
- Count on, using the jump strategy, to find change.
- 4:22PT Progress test
- Test of Addition and Subtraction
- 4:23 Addition, 4 digits, no trading
- 4 digit addition without trading. Convert from grams to kilograms, or between millilitres and litres. Practise mental addition.
- 4:23C Speed tests
- Addition and subtraction speed tests. Record results in a table.
- 4:24 Subtraction, 4 digits, no trading
- Practise subtracting 4 digits without trading. Practise mental subtraction.
- 4:25 Addition, 4 digits, with trading
- Practise adding 4 digits with trading, including distances.
- 4:25E Adding up to four numbers
- Extension page. Practise adding up to 4 numbers. Find the missing numbers. Replace shapes with numbers and complete. Which 4 numbers add to given total?
- 4:26 Subtraction algorithm, trading
- Complete subtraction algorithms and problems, with trading.
- 4:27 Subtracting from thousands
- Subtract from thousands using the 1999 + 1 method or a quick trade method.
- 4:27C Subtraction
- Trade 1 thousand for 10 hundreds and complete subtraction algorithms and problems.
- 4:27PT Progress test
- Test of Addition and Subtraction
- 4:AC New Maths Builder Texts
- Placeholder
- 4:ACC Year 4 Cover
- Placeholder
- 4:NA00C Contents: Year 4 Maths Builder text
- Contents
- 4:NA00D Answers: 4:NA01-4:NA21
- The answers to the Year 4 Maths Builder text 4: 4:NA01-4:NA21
- 4:NA00E Answers: 4:NA22-4:NA42
- The answers to the Year 4 Maths Builder text 4: 4:NA22-4:NA42
- 4:NA00F Answers: 4:NA42C-4:NA88C
- The answers to the Year 4 Maths Builder text 4: 4:NA42C-4:NA88C
- 4:NA05 Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms.
- 4:NA05C Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms.
- 4:NA05S Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms and problems. Round off answers to money questions.
- 4:NA06 Subtraction with trading
- 4:NA06C Subtraction with trading
- Complete algorithms and use jump or split strategy, or inverse operations, to check.
- 4:NA06S Subtraction with trading
- Subtraction with trading, using Base 10 blocks, problem solving.
- 4:NA07 Addition and subtraction
- Addition and subtraction
- 4:NA07C Addition and subtraction
- Extension page. Years and place value. 3 and 4 line addition algorithms. Doubling and near doubling strategy practice. Write 5 two-digit numbers that total under 100. Write 4 two-digit numbers that subtract from 60 leaving zero. Fill in the missing numbers.
- 4:NA07S Addition and subtraction
- Addition and subtraction algorithms, trading. Calculate and compare distances.
- 4:NA08 Addition/subtraction strategies
- Match each question to the position of its answer on the number line.
- 4:NA09 Inverse operations
- Complete each algorithm and check your answer using the inverse operation.
- 4:NA22 Addition, 3 digits, no trading
- Write each question as an algorithm and find the answer.
- 4:NA22C Addition of more than two numbers
- Multi-line additions of 3-digit numbers, with and without trading.
- 4:NA23 Addition, 3 digits, one trade
- Addition, 3 digits, one trade
- 4:NA23C Addition with one trade
- Addition with one trade, using concrete materials, if needed. Check answers using inverse operations.
- 4:NA23S Addition of four numbers
- Extension page. Estimate and add multiple line algorithms with trading. Explore changing a calculator display. Estimate how many days you've been alive. Write an algorithm to find exact number.
- 4:NA24 Subtraction, 3 digits, no trading
- Write each question as an algorithm and find the answer.
- 4:NA25 Subtraction with trading
- Use place value blocks to help you if they are needed.
- 4:NA25C Subtraction with trading
- Complete 3-digit subtractions with trading.
- 4:NA26 Rounding to estimate answers
- Round each number to the nearest 10, then find an estimate for the answer.
- 4:NA26C Addition using Base 10 blocks
- Problem solving with money and addition of 1 and 2 digit numbers, using Base 10 blocks.
- 4:NA27 Addition, 3 digits
- Addition and Subtraction
- 4:NA27C Addition of four numbers
- Extension page. Estimate and add multiple line algorithms with trading. Explore changing a calculator display. Estimate how many days you've been alive. Write an algorithm to find exact number.
- 4:NA28 Addition with trading
- Write and solve a problem
- 4:NA28C Addition with two trades
- Complete addition algorithms and problems that have 2 trades.
- 4:NA28S Addition up to five numbers
- Practise adding up to 5 numbers with trading. Make number sentences.
- 4:NA54 Subtraction with trading
- 4:NA54C Subtraction, 3 digits, one trade
- Complete 3-digit subtractions with one trade and make up number stories. Complete algorithms and check using jump strategy.
- 4:NA54S Addition and subtraction
- Complete addition and subtraction questions and check using inverse operation. Write the missing numbers in given algorithms to get correct answers.
- 4:NA55 Addition strategies
- Addition and Subtraction
- 4:NA55C Mental strategies for addition
- Mental addition using jump strategy, bridging decades, associative strategy, compensation strategy.
- 4:NA56 Estimating with addition
- Estimate your answer by rounding to the nearest 100 then completing the algorithm.
- 4:NA57 Estimating with subtraction
- Estimate your answer by rounding to the nearest 100 then complete the algorithm.
- 4:NA58 Addition/subtraction strategies
- Using the jump strategy. Using the split strategy. Using patterns to extend number facts.
- 4:NA58C Addition and subtraction
- Complete addition and subtraction questions and check using inverse operation. Circle incorrect answers to given algorithms and write correct answers.
- 4:NA59 Subtraction from 100s
- 4:NA60 Subtraction from 100s
- Subtraction from 100s
- 4:NA61 Calculating change
- Using the jump strategy to give change from $20.
- 4:NA62 Problems involving money
- Count to find the change.
- 4:NA63 Using 4 digits, no trading
- Change from grams to kilograms and grams. Change from millilitres to litres and millilitres.
- 4:NA63C Using 4 digits, no trading
- Practise addition and subtraction 4 digits without trading. Practise mental subtraction.
- 4:NA64 Addition, 4 digits, with trading
- Addition and Subtraction
- 4:NA64C Adding up to four numbers
- Extension page. Practise adding up to 4 numbers. Find the missing numbers. Replace shapes with numbers and complete. Which 4 numbers add to given total?
- 4:NA69 Subtraction algorithm, trading
- Complete the subtraction algorithms.
- 4:NA70 Subtracting from thousands
- Subtraction
- 4:NA87 Addition to 5 digits
- Addition to 5 digits
- 4:NA87C 5-digit addition and subtraction
- Addition and subtraction of 5-digit numbers with trading. Rounding to find totals. Match the correct number to make each algorithm true.
- 4:NA88 Subtraction to 5 digits
- Subtraction to 5 digits
- 4:NA88C 5-digit addition and subtraction
- Addition and subtraction of 5-digit numbers with trading. Rounding to find totals. Match the correct number to make each algorithm true.
- 4:S1 Subtracting 1
- Subtracting 1 by counting back
- 4:S2 Subtracting 2
- Subtracting 2 by counting back
- 4:S3 Subtraction facts to 20
- Subtraction facts to 20 are practised with a view to quick response using knowledge of addition facts.
- 4:plus1 Adding 1
- Number facts involving adding 1
- 4:plus2 Adding 2
- Number facts involving adding 2
- 4:plus3 Adding 3
- Addition combinations - adding 3
- 4:plus4 Adding 4
- Addition combinations - adding 4
- 4:plus5 Adding 5
- Addition combinations - adding 5
- 4:plus6 Adding 6
- Addition facts - adding 6
- 4:plus7 Adding 7
- Addition facts - adding 7
- 4:plus8 Adding 8
- Addition facts - adding 8
- 4:plus9 Adding 9
- Addition facts - adding 9
- 4:plusA Addition facts to 20
- Addition facts to 20
- 4:plusB Addition facts to 20
- Addition facts to 20
- 4:plusten Adding 10
- Addition facts - adding 10