12 + −19
- 7
a + 5 when a = 3
8
Write 108 in numbers
100 000 000
−8 + 15
7
Simplify each of these expressions. 7w – 4w
3W
____ × 4 = – 36
- 9
_____ ÷ – 8 = 7
- 56
6(5d – 1)
30d – 6
8.375 x 102
837.5
Find the HCF of 24 and 36.
12
Round each of these numbers to the given degree of accuracy. 81.02981 (2 decimal places)
81.03
54, 000 ÷ 104
5.4
7(6c – 7h)
42c – 49h
9b² – 5b²
4b²
Is 4,536 divisible by 3?
yes
Find the LCM of 9 and 15.
45
Maliha thinks of a number, y. Write an expression for the number Maliha gets when she:
divides the number by 2
y/2
Round each of these numbers to the given degree of accuracy. 89.99999 (4 decimal places)
90.0000
Work out the value of each expression. m — n when m = 10 and n = 25
– 15
The product of two integers is -20. The sum of the two integers is 8. Work out the two integers.
–2 & 10
A whole number is greater than 45 672. The number is also divisible by 9.
Find the smallest whole number with this property.
45,675
The number 75, 21* is divisible by 6. Find the possible values of the digit *.
6
Simplify this expression. Write your answer in its simplest form.
7a/10 + 2a+15
5a/6
Write down the smallest integer that y could be.
y > 2.5
3
The cube root of a number is 9. . Work out the square root of the number.
27