Decimal Manipulation
2.04 - 0.94 -0.005
1.095
Work out an estimate for the value of:
528 × 0.685
500 x 0.7
= 350
Given that
27 × 18 = 486
write down the value of
27 000 × 180
4 860 000
Multiples of 28: 28, 56, 84, 112, 140, 168, 196, 224, 252, 280…
Multiples of 24: 24, 48, 72, 96, 120, 144, 168, 192, 216, 240…
What is the lowest common multiple?
168
Find 1/8 of 32
4
0.08 x 70
5.6
Work out an estimate for the value of:
589 × 47
≈ 600 × 50
≈ 30 000
Overestimate
Given that
1960 ÷ 70 = 28
write down the value of
1960 ÷ 7000
0.28
What is the highest common factor of 12 and 18?
6
7/9 - 1/6
11/18
0.83 ÷ 0.6
1.383 ̇
Truncate to 3 significant figures:
19.999
19.9
Given that
504 ÷ 42 = 12
write down the value of
252 ÷ 21
12
Express 144 as a product of its prime factors.
2⁴ x 3²
Find 8/5 of 6
Leave your answer as a mixed number in its simplest form.
9 3/5
(0.3 + 0.2 x 3)²
0.81
A number rounded to the nearest thousand is 5000.
What are the greatest and least possible values?
Greatest = 5499.9 ̇
Least = 4500
Given that
140 ÷ 60 = 2.3 ̇
write down the value of
140 ÷ 12
11.6 ̇
Find the highest common factor of 36 and 60.
12
2 1/4 ÷ 1 7/8
Leave your answer in its simplest form.
6/5
or
1 1/5
0.54/0.9 + 0.48
1.08
x is rounded to the nearest ten.
The result is 270.
Write the error interval for x.
265 ≤ x < 275
Given that
24 × 18 = 432
work out the value of
1296 ÷ 24
54
Find the lowest common multiple of 42 and 35.
210
(4/5 - 1/2)²
9/100