Ks3 Mathematics Level 4 Answers - Mental Arithmetic Questions Page 3
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20Mental Arithmetic Questions
1. A teacher asked some pupils if they had a part-time job.
The pie chart shows the results. The teacher asked twenty
pupils. How many of them said yes?
KS3 MATHEMATICS
Yes is a quarter of the pie, so the
teacher asked a quarter of 20.
10 4 10
20 ÷ 4 = 5, so 5 students
2. Four packets of biscuits cost one pound. How much would
Level 4 Answers
six packets of biscuits cost?
£1 ÷ 4 = 25p, so each biscuits costs 25p.
Day 2
6 X 25 p = 150p or £1.50.
3. Look at the rectangle. What is its perimeter?
Perimeter is the distance around a
shape, so 8cm + 7cm + 8cm + 7cm.
7 cm
This gives 30 cm.
8 cm
Remember to
4. Look at the expression in the square. Which answer below
put the lengths
is the same as the expression in the square? Ring the
of the missing
correct on.
sides!
5. Look at the equation. When x equals five, what is the value
of y?
y = 3 X 5 + 6
y = 15 + 6
y = 21
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