Long jump
First, you read the question through thoroughly and carefully. Because the boy in the text said he jumped 3.75m and that was double the amount of his first attempt.
To find out how far the first jump was, you need to halve 3.75m, 3.00 halved is 1.50 then half 70 which is 45 then half 5 which is 2.5 and then add up all your calculations and that should give you the answer.There is another way of working out this problem by multiplying 3.75m by 2 and then dividing it 4 then you reach the same answer as before. The answer is 187.5cm
High Jump
Read the question through thoroughly and carefully and as you can see Mia has jumped 1.20m high.It says you have to work out how how high Mia jumped on her first attept if she jumped half as high,so what you need to do is half 1.20m and that should give you the answer to your question,you can also work this out by multiplying it by 2 and then dividing it by 4.The answer is 60cm high.