Year 3 · Autumn term · weeks 4 to 8 · Number
Year 3 Addition and subtraction worksheets
Year 3 Addition and subtraction is taught in the Autumn term, weeks 4 to 8. This block has 22 steps: Apply number bonds within 10; Add and subtract 1s; Add and subtract 10s; Add and subtract 100s; Spot the pattern; Add 1s across a 10; Add 10s across a 100; Subtract 1s across a 10; Subtract 10s across a 100; Make connections; Add two numbers with no exchange; Subtract two numbers with no exchange; Add two numbers across a 10; Add two numbers across a 100; Subtract two numbers across a 10; Subtract two numbers across a 100; Add 2-digit and 3-digit numbers; Subtract a 2-digit number from a 3-digit number; Complements to 100; Estimate answers; Inverse operations; Make decisions.
Steps in this block
Step 1: Apply number bonds within 10
Use bonds within 10 to add and subtract tens and hundreds, such as 3 + 4 = 7 so 30 + 40 = 70.
Step 1 · not scaffolded sheet with answersStep 2: Add and subtract 1s
Add and subtract 1s from three-digit numbers, using a number line or place value chart to help.
Step 2 · not scaffolded sheet with answersStep 3: Add and subtract 10s
Add and subtract 10s from three-digit numbers, using base ten and place value charts to help.
Step 3 · not scaffolded sheet with answersStep 4: Add and subtract 100s
Add and subtract 100s from three-digit numbers.
Step 4 · not scaffolded sheet with answersStep 5: Spot the pattern
Spot patterns when the same digit is added or subtracted as ones, tens and hundreds.
Step 5 · not scaffolded sheet with answersStep 6: Add 1s across a 10
Add 1s to three-digit numbers when the ones column makes a new ten.
Step 6 · not scaffolded sheet with answersStep 7: Add 10s across a 100
Add 10s to three-digit numbers when the tens column makes a new hundred.
Step 7 · not scaffolded sheet with answersStep 8: Subtract 1s across a 10
Subtract 1s from three-digit numbers when the ones column has to change a ten.
Step 8 · not scaffolded sheet with answersStep 9: Subtract 10s across a 100
Subtract 10s from three-digit numbers when the tens column has to change a hundred.
Step 9 · not scaffolded sheet with answersStep 10: Make connections
Connect adding and subtracting 1s, 10s and 100s, and use one fact to work out others.
Step 10 · not scaffolded sheet with answersStep 11: Add two numbers with no exchange
Add two numbers in columns when no column needs to be exchanged.
Step 11 · not scaffolded sheet with answersStep 12: Subtract two numbers with no exchange
Subtract two numbers in columns when no column needs to be exchanged.
Step 12 · not scaffolded sheet with answersStep 13: Add two numbers across a 10
Add two numbers in columns when the ones need to be exchanged for a ten.
Step 13 · not scaffolded sheet with answersStep 14: Add two numbers across a 100
Add two numbers in columns when the tens need to be exchanged for a hundred.
Step 14 · not scaffolded sheet with answersStep 15: Subtract two numbers across a 10
Subtract two numbers in columns when a ten is exchanged for 10 ones.
Step 15 · not scaffolded sheet with answersStep 16: Subtract two numbers across a 100
Subtract two numbers in columns when a hundred is exchanged for 10 tens.
Step 16 · not scaffolded sheet with answersStep 17: Add 2-digit and 3-digit numbers
Add a two-digit number to a three-digit number, with exchanges across a 10 and a 100.
Step 17 · not scaffolded sheet with answersStep 18: Subtract a 2-digit number from a 3-digit number
Subtract a two-digit number from a three-digit number, with exchanges across a 10 and a 100.
Step 18 · not scaffolded sheet with answersStep 19: Complements to 100
Find the number that makes 100 from a two-digit number, using tens and ones.
Step 19 · not scaffolded sheet with answersStep 20: Estimate answers
Round numbers to the nearest 10 or 100 to estimate answers, then work out the exact answer.
Step 20 · not scaffolded sheet with answersStep 21: Inverse operations
Use addition to check a subtraction and subtraction to check an addition.
Step 21 · not scaffolded sheet with answersStep 22: Make decisions
Choose whether to add or subtract to solve problems, using bar models to help.
Step 22 · not scaffolded sheet with answersHow to use this block
Work through the steps in order. For each step, start the class on the Expected sheet and give Developing or Greater depth sheets where needed. Every worksheet has a separate answer sheet, so children can mark their own work or you can mark it with a marks column. Use the Make a sheet page, or the teacher guide, if you want to know more.