Math’s department
Year 8
Review sheets
• Students can solve all related exercise in their practice book.
• Start with chapter 4 exercises 4A ,4B and 4C
• Chapter 8 exercises 8A and 8B
• Students need to print this document and solve on an A4 lined paper.
• Due date: Thursday 5th of November.
• students can scan the answers and send them by email “optional”
• Dina okasha :
eldandoon@hotmail.com1. Write down the answers to:
a. 2.3 × 100 b 1.56 × 100 c 0.7× 1000
d 70 ÷ 1000 e 456 ÷ 100 f 9.09 ÷ 1000
g 1.08× 100 h 80 ÷ 100
2. Multiply these numbers by i. 0.1, and ii. 0.01:
a. 1.23 b 790
3. Divide these numbers by i 0.1, and ii 0.01:
a. 45.78 b 7.9
4. Round these numbers to i one decimal place, and ii two decimal places:
a. 31.89 b 7.099 c 3.899
5. Round off the following numbers to
i the nearest ten thousand
ii the nearest hundred thousand and
iii the nearest million
a. 3 567 899 b 9 876 345
6. Write the following decimals as fractions with a denominator of 10, 100 or 1000 and then cancel to their simplest form if possible:
a. 0.22 b 1.42 c 2.25 d 0.86
7. Work out:
a of £99 b of 56 kg
8. Work out, cancelling down or writing as mixed numbers, as appropriate:
a 3 × b 4 × c ÷ 6 d ÷ 8
9. A. Write the fraction of a full turn that the minute hand of a clock goes through
from:
i. 8:15 to 9:45 ii 9:25 to 11:10 iii 7:12 to 9:36
b. Write the fraction of a metre given by: i 675 cm ii 4225 mm iii 310 cm
c. Write the fraction of a kilogram given by: i 3300 g ii 4450 g iii 8500 g
10. Write the operation that you do first in each of these calculations, and then work out each one:
a. 6 + 2 × 3 b (6 + 2) × 3 c 6 × 7 – 5 d 6 × (7 – 5)
11. Work out the following, showing each step of the calculation:
a. 32 ÷ 4 + 42 b 32 ÷ (4 + 4)2 c 2 × 3 + 22 d 2 × (3 + 2)2
12. Write out each of the following with brackets to make the calculation true:
a. 2 × 9 – 1 = 16
b. b 5 + 3 × 2 = 16
c. c 2 + 3 × 1 + 4 = 25
13. Work out the following (do the inside bracket first):
a. 150 ÷ [20 – (3 + 2)]
b. b 150 ÷ [(25 – 3) – 2]
c. c 3 + [7 × (4 – 1)]
Subject: review sheets 
Wed Nov 04, 2009 3:53 pm
