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.
An array shows 4 rows of 2 dots. What is 4 × 2?
- 10
- 6
- 8
Answer: 8. 4 rows of 2 dots: 4 × 2 = 8.
ProCompare and infer.
Each of the 5 rows has 3 dots. How many dots are there altogether?
- 15
- 12
- 18
- 8
Answer: 15. 5 rows of 3 dots: 5 × 3 = 15.
GuruMulti-step reasoning.
This array has 5 rows of 3 dots. How many more dots are needed to make 23 altogether?
- 15
- 9
- 23
- 8
Answer: 8. The array has 5 × 3 = 15 dots. To reach 23: 23 − 15 = 8 more.
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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