Year 3 Arithmetic
Add and subtract three-digit numbers using column methods; multiply and divide by 2, 3, 4, 5, 8, and 10.
Try the worked examples below, then start an adaptive session that adjusts to your level.
Worked examples
RookieRead and interpret directly.
Find the total: 3 equal groups of 6.
- 9
- 12
- 18
- 24
Answer: 18. 3 groups of 6 is 3 × 6 = 18.
ProCompare and infer.
Each of the 2 rows has 7 dots. How many dots are there altogether?
- 14
- 21
- 7
- 9
Answer: 14. 2 rows of 7 dots: 2 × 7 = 14.
GuruMulti-step reasoning.
Starting at 5, you land on 20 after 3 equal jumps. How big was each jump?
- 5
- 10
- 15
- 3
Answer: 5. 3 jumps cover 20 − 5 = 15; each jump = 15 ÷ 3 = 5.
Skills in this topic
- Column AdditionPractise column addition within Arithmetic for Year 3, with worked examples and instant feedback.
- Column SubtractionPractise column subtraction within Arithmetic for Year 3, with worked examples and instant feedback.
- MultiplicationMultiply numbers using known facts, arrays and formal written methods.
- DivisionDivide numbers using sharing, grouping and short division, with remainders.
Frequently asked questions
- What is covered in Year 3 Arithmetic?
- Add and subtract three-digit numbers using column methods; multiply and divide by 2, 3, 4, 5, 8, and 10. Key skills include Column Addition, Column Subtraction, Multiplication, Division.
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