Addition and Subtraction

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#### Level contents

- * Assessment for the whole of Level 3
- ** Assessment test answers
- *** Assessment test records
- 3:00 Concept Dictionary - Addition and Sub...
- Teaching points extracted from worksheets showing the development of addition and subtraction concepts from Year 0 to Year 6
- 3:01 Addition and subtraction facts
- Match number sentences to answers in numerals or words. Make number sentences true by counting on. Match questions to position of answers on number line. Join the feet that have matching answers.
- 3:01C Addition facts
- Addition and subtraction practice, 1- and 2-digit numbers.
- 3:02 Mental addition strategies
- Extension page. Addition practice using patterns and Bridging to ten. Addition and subtraction practice using the split strategy.
- 3:02A Addition facts to 20
- Addition using an addition chart. Discuss patterns. Doubles. Related addition and subtraction facts. Fill in missing parts of addition number sentences.
- 3:02E Addition and subtraction strategies
- Extension page. Practise using patterns, the split strategy or bridging to tens strategies for addition and subtraction
- 3:03 The jump strategy
- Addition and subtraction practice using the jump strategy - number lines.
- 3:04 Addition using Base 10 blocks
- Problem solving and addition of 2 digit numbers using Base 10 blocks.
- 3:04C Addition using Base 10 blocks
- Problem solving with money and addition of 1 and 2 digit numbers, using Base 10 blocks.
- 3:05 Addition algorithm, no trading
- Problem solving and addition of 1- and 2-digit numbers, using Base 10 blocks.
- 3:06 Addition, no trading
- Addition of 2- and 3-digit decimal numbers, in algorithm form.
- 3:06PT Progress test
- Test of Addition and Subtraction
- 3:07 More addition strategies
- Addition and Subtraction using patterns or compensation strategy, or by changing the order of addends.
- 3:08 Subtraction using Base 10 blocks
- Subtraction of 2-digit numbers using Base 10 blocks, problem solving.
- 3:09 Subtraction, no trading
- Subtraction of 2 digit numbers and money, in the algorithm form, problem solving.
- 3:09A Relating addition and subtraction
- Relating addition and subtraction. Jump strategy. Number lines. Counting on. Relating addition and subtraction number sentences.
- 3:09C The jump strategy
- Addition and subtraction of 2-digit numbers using the jump strategy - number lines
- 3:10 Subtraction, no trading
- Subtraction of 2-digit numbers and money, in the algorithm form. Problem solving, using algorithms and the jump strategy - number lines to check.
- 3:10C Addition and subtraction, no trading
- Addition and subtraction of 1- and 2-digit numbers using the algorithm.
- 3:11 Addition with trading
- Use Base 10 materials to trade ten ones for one ten and complete the addition algorithms and problems.
- 3:12 Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms.
- 3:12C Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms.
- 3:13 Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms and problems. Round off answers to money questions.
- 3:13C Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms
- 3:13PT Progress test
- Test of Addition and Subtraction
- 3:14 Shopping
- Match items to coins needed to buy. Add prices and round. State coins needed. Calculate change by adding on.
- 3:14C Giving change
- Count on to calculate change.
- 3:15 Subtraction with trading
- Subtraction with trading, using Base 10 blocks, problem solving.
- 3:15C Subtraction with trading
- Complete number sentences. Write the numbers represented by the examples of trading shown in Base 10 material. Use concrete material to solve subtraction algorithms.
- 3:16 Subtraction with trading
- Complete subtraction algorithms by trading.
- 3:17 Subtraction with trading
- Complete subtraction algorithms and problems by trading.
- 3:17C Subtraction with trading
- Complete mental subtraction sentences. Practise trading tens for ones. Show trading above as you complete the algorithms. Write some of your own.
- 3:18 Addition with trading
- Complete 2 -digit addition algorithms with trading. Complete problems using trial and error.
- 3:18PT Progress test
- Test of Addition and Subtraction
- 3:19 Subtraction with trading
- Complete 2-digit subtraction algorithms and problems that require trading.
- 3:19E Addition and subtraction with trading
- Extension page. Complete addition and subtraction algorithms and problems that require trading. Estimate differences.
- 3:20 Estimation with addition
- Round and estimate answers before completing. Check reasonableness of completed answers by estimating. Estimate and solve using a calculator.
- 3:21 Estimation with subtraction
- Estimate answers by rounding and solve, checking reasonableness. Solve and estimate to check.
- 3:22 Decimal addition and subtraction
- Addition and subtraction of decimals/ money. Practise keeping points under points. Find change.
- 3:23 Addition and subtraction
- Timeline of ages, finding difference, adding ages. Estimating.
- 3:23E Addition and subtraction
- Extension page. Use given numbers only once to make algorithms with the smallest or largest possible total. Fill in blanks to make algorithms correct.
- 3:23PT Progress test
- Test of Addition and Subtraction
- 3:24 Addition using place value
- Addition of 2-digit numbers using place value. Addition using place value blocks.
- 3:24A Adding large numbers using place valu...
- Addition of 3-digit numbers using place value. Numeral expanders. Tens and ones.
- 3:25 Subtraction using place value
- Subtraction using place value. Changing 3-digit numbers to tens and ones. Tens and ones.
- 3:25A Subtraction using place value
- Subtraction using place value. Rounding to the nearest 100. Estimating. Hundreds, tens and ones.
- 3:AC New Maths Builder Texts
- Placeholder
- 3:ACC Year 3 Cover, Maths Builder e-Text
- Placeholder
- 3:NA00C Contents: Year 3 Maths Builder text
- Contents
- 3:NA00D Answers: 3:NA01 - 3:NA25C
- The answers to Number and Algebra of the Year 3 Maths Builder text (3:NA01 - 3:NA25C)
- 3:NA00E Answers: 3:NA26 - 3:NA45C
- The answers to Number and Algebra of the Year 3 Maths Builder text (3:NA26 - 3:NA45C)
- 3:NA00F Answers: 3:NA46 - 3:NA79
- The answers to Number and Algebra of the Year 3 Maths Builder text (3:NA46 - 3:NA79)
- 3:NA01 Addition and subtraction facts
- Match number sentences to answers in numerals or words. Make number sentences true by counting on. Match questions to position of answers on number line. Join the feet that have matching answers.
- 3:NA01C Addition facts
- Addition and subtraction practice, 1- and 2-digit numbers.
- 3:NA02 Mental addition strategies
- Extension page. Addition practice using patterns and Bridging to ten. Addition and subtraction practice using the split strategy.
- 3:NA02C Addition and subtraction strategies
- Extension page. Practise using patterns, the split strategy or bridging to tens strategies for addition and subtraction
- 3:NA20 The jump strategy
- Addition and subtraction practice using the jump strategy - number lines.
- 3:NA21 Addition using place value blocks
- Problem solving and addition of 2 digit numbers using place value blocks.
- 3:NA21C Addition using place value blocks
- Problem solving with money and addition of 1 and 2 digit numbers, using place value blocks.
- 3:NA22 Addition algorithm, no trading
- Problem solving and addition of 1- and 2-digit numbers, using Base 10 blocks.
- 3:NA22C Addition using place value blocks
- Problem solving with money and addition of 1 and 2 digit numbers, using Base 10 blocks.
- 3:NA24 Addition, no trading
- Addition of 2- and 3-digit decimal numbers, in algorithm form.
- 3:NA30 More addition strategies
- Addition and Subtraction using patterns or compensation strategy, or by changing the order of addends.
- 3:NA31 Subtraction using blocks
- Subtraction of 2-digit numbers using Base 10 blocks, problem solving.
- 3:NA31C The jump strategy
- Addition and subtraction of 2-digit numbers using the jump strategy - number lines
- 3:NA32 Subtraction, no trading
- Subtraction of 2 digit numbers and money, in the algorithm form, problem solving.
- 3:NA32C Relating addition and subtraction
- Relating addition and subtraction. Jump strategy. Number lines. Counting on. Relating addition and subtraction number sentences.
- 3:NA33 Subtraction, no trading
- Subtraction of 2-digit numbers and money, in the algorithm form. Problem solving, using algorithms and the jump strategy - number lines to check.
- 3:NA33C Addition and subtraction, no trading
- Addition and subtraction of 1- and 2-digit numbers using the algorithm.
- 3:NA41 Addition with trading
- Use Base 10 materials to trade ten ones for one ten and complete the addition algorithms and problems.
- 3:NA41C Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms.
- 3:NA42 Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms.
- 3:NA42C Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms
- 3:NA45 Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms and problems. Round off answers to money questions.
- 3:NA45C Addition with trading
- Use Base 10 materials to trade and complete the addition algorithms
- 3:NA46 Shopping
- Match items to coins needed to buy. Add prices and round. State coins needed. Calculate change by adding on.
- 3:NA46C Giving change
- Count on to calculate change.
- 3:NA47 Representing money values
- Matching different amounts of money
- 3:NA48 Subtraction with trading
- Subtraction with trading, using Base 10 blocks, problem solving.
- 3:NA48C Subtraction with trading
- Complete number sentences. Write the numbers represented by the examples of trading shown in Base 10 material. Use concrete material to solve subtraction algorithms.
- 3:NA49 Subtraction with trading
- Subtraction with trading, using Base 10 blocks, problem solving.
- 3:NA49C Subtraction with trading
- Complete mental subtraction sentences. Practise trading tens for ones. Show trading above as you complete the algorithms. Write some of your own.
- 3:NA50 Subtraction with trading
- Complete subtraction algorithms and problems by trading.
- 3:NA51 Addition with trading
- Complete 2 -digit addition algorithms with trading. Complete problems using trial and error.
- 3:NA51C Addition and subtraction with trading
- Extension page. Complete addition and subtraction algorithms and problems that require trading. Estimate differences.
- 3:NA52 Subtraction with trading
- Complete 2-digit subtraction algorithms and problems that require trading.
- 3:NA59 Estimation with addition
- Round and estimate answers before completing. Check reasonableness of completed answers by estimating. Estimate and solve using a calculator.
- 3:NA60 Estimation with subtraction
- Estimate answers by rounding and solve, checking reasonableness. Solve and estimate to check.
- 3:NA69 Inverse operations
- Completing number sentences using inverse operations. Complete algorithms and check using inverse operation.
- 3:NA70 Addition and subtraction
- Timeline of ages, finding difference, adding ages. Estimating.
- 3:NA70C Addition and subtraction
- Extension page. Use given numbers only once to make algorithms with the smallest or largest possible total. Fill in blanks to make algorithms correct.
- 3:NA74 Using partitioning to add numbers
- Addition strategy: using partitioning of numbers.
- 3:NA75 Addition strategies
- Practise addition strategies - Bridging decades, changing order of addends, compensation strategy
- 3:S1 Subtracting 1
- Subtracting 1 by counting back
- 3:S2 Subtracting 2
- Subtracting 2 by counting back
- 3:S3 Subtraction facts to 20
- Subtraction facts to 20 are practised with a view to quick response using knowledge of addition facts.
- 3:plus1 Adding 1
- Number facts involving adding 1
- 3:plus2 Adding 2
- Number facts involving adding 2
- 3:plus3 Adding 3
- Addition combinations - adding 3
- 3:plus4 Adding 4
- Addition combinations - adding 4
- 3:plus5 Adding 5
- Addition combinations - adding 5
- 3:plus6 Adding 6
- Addition facts - adding 6
- 3:plus7 Adding 7
- Addition facts - adding 7
- 3:plus8 Adding 8
- Addition facts - adding 8
- 3:plus9 Adding 9
- Addition facts - adding 9
- 3:plusA Addition facts to 20
- Addition facts to 20
- 3:plusB Addition facts to 20
- Addition facts to 20
- 3:plusten Adding 10
- Addition facts - adding 10