Addition and Subtraction
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Level contents

* Assessment for the whole of Level 3
** Assessment test answers
*** Assessment test records
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

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