Adding Decimals (Year 4)
Practise adding decimals within Decimals for Year 4, with worked examples and instant feedback.
The questions below are generated to match the National Curriculum for Year 4 and get harder as you progress from Rookie to Guru.
Worked examples
RookieRead and interpret directly.
What is 0.3 + 0.5?
- 0.2
- 0.35
- 0.8
- 1.0
Answer: 0.8. 3 tenths + 5 tenths = 8 tenths = 0.8.
ProCompare and infer.
What is 0.7 + 0.87?
- 1.67
- 1.57
- 0.94
- 1.47
Answer: 1.57. Write 0.7 as 0.70, then add column by column: 0.70 + 0.87 = 1.57.
GuruMulti-step reasoning.
A piece of string is 0.8 m. Ella cuts it into 4 equal pieces. Each piece is then cut in half. How many CENTIMETRES is each final piece?
- 10 cm
- 20 cm
- 80 cm
- 8 cm
Answer: 10 cm. 0.8 m ÷ 4 = 0.2 m. Half of 0.2 m = 0.1 m = 10 cm.
Related skills
Frequently asked questions
- What is adding decimals?
- Practise adding decimals within Decimals for Year 4, with worked examples and instant feedback.
- How can my child practise adding decimals at home?
- Work through the examples below, then start a free adaptive session. Northstar adjusts the difficulty automatically and tracks mastery over time.
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