Paper 1 Questions

Question 1

Write these numbers in order of size. Start with the smallest number.

a) 6.72 x 10^5 b) 67.2 x 10^-4
c) 672 x 10^4 d) 0.000672

Answer 1

d) 0.000672
b) 67.2 x 10^-4
a) 6.72 x 10^5
c) 672 x 10^4

Question 2

Three whole numbers are each rounded to the nearest 1O. The sum of the rounded numbers is 70.
Work out the maximum possible sum for the original three numbers.

Answer 2

Each number needs to end with 4.

so 34 + 24 + 24 = 82

Rounded would be 30 + 20 + 20 = 70

Question 3

Write as an ordinary number.
3.4 x 1O^-2

Answer 3

3.4 x 1/(10^2)
=3.4 x 0.01
=0.034

Question 4

A sequence has three terms.
The term-to-term rule for the sequence is
[multiply by 8 and then add 11]

a) The fist term for the sequence -1
Work out the third term.

b) The order of the three terms is reversed to make a new sequence. Work out the term-to-term rule for the sequence.

Answer 4

a) 2nd -1 x 8 + 11 = 8 + 11 = 3
3rd 3 x 8 + 11 = 24 + 11 = 35

b) Subtract 11 then divide by 8.

Question 5

6 - (-7)

Answer 5

13

Question 6

Draw a rectangle with a perimeter of 20cm and an area of 16cm^2

Answer 6

8cm x 2cm