KS2 SATs KS2 Mathematics 5 — Questions and Answers
Question 1: A ratio of red to blue counters is 2:3. There are 10 red counters. How many blue counters are there?
- 6
- 12
- 15 (Correct answer)
- 9
Correct answer: 15
If red:blue = 2:3 and there are 10 red, the scale factor is 10 ÷ 2 = 5. Blue = 3 × 5 = 15.
Question 2: What is 7/8 − 3/8?
- 4/16
- 1/2 (Correct answer)
- 4/8
- 3/4
Correct answer: 1/2
7/8 − 3/8 = 4/8. Simplify 4/8 by dividing by 4: = 1/2. So the answer is 1/2.
Question 3: What is 3.14 rounded to the nearest whole number?
- 3 (Correct answer)
- 4
- 3.1
- 3.2
Correct answer: 3
To round 3.14 to the nearest whole number, look at the first decimal digit: 1. Since 1 < 5, round down to 3.
Question 4: What are the factors of 24?
- 1, 2, 3, 4, 6, 8, 12, 24 (Correct answer)
- 1, 2, 3, 4, 5, 6, 8, 24
- 1, 2, 4, 6, 8, 12, 24
- 2, 3, 4, 6, 8, 12
Correct answer: 1, 2, 3, 4, 6, 8, 12, 24
Factors of 24 are numbers that divide into 24 exactly: 1, 2, 3, 4, 6, 8, 12, 24. Work in pairs: 1×24, 2×12, 3×8, 4×6.
Question 5: Which of these is NOT a net of a cube?
- A cross shape with 6 squares
- A T-shape with 6 squares
- A straight line of 6 squares (Correct answer)
- An L-shape with 6 squares
Correct answer: A straight line of 6 squares
A net of a cube must have 6 squares arranged so that when folded, they form a cube without gaps or overlaps. A straight line of 6 squares cannot fold into a cube.
Question 6: What is 0.3 × 0.4?
- 1.2
- 0.12 (Correct answer)
- 0.012
- 12
Correct answer: 0.12
0.3 × 0.4: think of it as 3 × 4 = 12, then count decimal places (1 + 1 = 2 decimal places), so the answer is 0.12.
KS2 SATs KS2 Mathematics 5
A ratio of red to blue counters is 2:3.
There are 10 red counters.
How many blue counters are there?