Surds
4√2 + 2√2
4√2 + 2√2 = 6√2
2+5÷5+3
6
100 is what percentage of 300
33.3333…
Convert 7348/100 into decimals
73.48
In a class there are 20 boys and 15 girls. The ratio of boys to girls is
4:3
2√3 × 3√5
6√15
3+6-(5x3)
-6
Convert 0.175 into percentage
17.50%
Convert 5 9⁄12 into decimals.
5.75
Divide 120 to the ratio: 4:7:1. Find the value of 4.
36
Simplify: √18
√18 = √(3 × 3 × 2)
√18 = √3 × √3 ×√2
√18 = (√3)2×√2
√18 = 3√2
(15 × 32 ÷ 2 × 5) ÷ 75
16
2200 decreased by 8% is
2024
0.847 x 3.54
2.99838
The first, second and fourth terms of a proportion are 16, 24 and 54 respectively. Then the third term is:
36
Write √7 in exponential form.
71/2
5 × (2 × 34) ÷ 6 + 7 – 8
134
An item is bought for Rs 42 and sold it for Rs. 52.50. Calculate the percentage increase.
25%
658.17÷38.46
17.11
The ratio of pencils and pens in a shop is 6∶7. If the total number of tools in the shop is 3289, then how many pens are there?
1771
Simplify: √21 × √15.
√21 × √15 = √(7 × 3) × √(3 × 5)
√21 × √15 = √(7 × 3 × 3 × 5)
√21 × √15 = 3 √(7×5)
√21 × √15 = 3√35
2 + 4 ÷ (22 + 6) × 2
2 2/7
The value of x increases from 10 to 15. What is the percent increase of x?
50%
Find the value of 29.94 ÷ 1.45, if 2994 ÷ 14.5 = 172.
17.2
The angles in a triangle are in the ratio 3:4:5. Work out the size of each angle.
45, 60 and 75.