Work out 51% of 400? (No calculator)
Finding 51% of 400 is the same as finding 50% of 400, and 1% of 400, and adding them together. Finding 50% of a number is the same as finding half of the number, since half of 100% is 50%. Half of 400 is 200, so 50%=200. 1% of 400 is the same as dividing by 100. 1%=400/100 = 4. Now, 51% = 50% + 1% = 200 + 4 =204.
CW
Related Maths GCSE answers
All answers ▸How to do add or subtraction fractions?
How do you find the points of intersection of two curves?
White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.
Simplify p^2×p^5