Answers to Maths Review 8 and Diagnostic Test 4

Diagnostic Test 4

1) 76 more small eggs than big eggs (102 big eggs, 188 small eggs)

2) 16 x $20 = $320

3) There is missing information in the question. I'll give the full question.

Yesterday, Georgy took out 5/9 of his money from his piggy bank. He spent $28 on a computer set, $14 on a pen and the remaining $65 on a squash racket. When he received his monthly allowance later, he put 3/7 of it into his piggy bank. As a result, the amount of money in his piggy bank increased to $100.60. What was his monthly allowance?

Answers: $15/3 x 7 = $35

4) 50 + 60 = 110 left

5) 180 male guppies - 6 female guppies = 174 more guppies

6) 255 x 3 = 765 more girls than boys

7) 96 - 54 = 42 more stamps

8) 90/315 = 6/21 = 2/7

9) 4 x 4 = 16 tickets

10) 24 - 6 = 18 years' time

Review 8

1) 2800/14 x 4 = 800 eggs

2) Amos: $190; Peter: $50

3) 70/560 = 7/56 = 1/8

4) 3 x 3 kg = 9 kg (heavier ball)

5) 3 years' time
Find the age difference: 45-9 = 36,
then 4 units = 36 years,
find 1 unit which is Don's future age, 36/4 = 12
12 - 9 = 3 years' time

6) 16/160 = 1/10

7) $17 x 3 = $51

8) Jill: 20 fish, Rick: 80 fish

9) 63 kg + 76.8 kg = 139.8 kg

10) 60 years' time
Age difference = 20 - 4 = 16
Then 1 unit = 16
4 units = 16 x 4 = 64
Don's future age is 64,
64 - 4 = 60

Let me know if you need working for the rest of the questions.