Geometry

Fractions

Percentage

Area of triangle

Average

NOTE:

•Average = Total ÷ no. of quantity

•Note: 0 is considered one quantity too

•Total = average x no. of quantities

For more revision:

•Visible Thinking 5B Pg 25 Qn 28
•Word Problems: refer to VT for more practice revision
•Average topical test

Try!

In a test, A scored 34 marks, B scored 48 marks and C scored 20 marks. How many marks should C have scored if they want to increase their average by 3marks?

Answer will be posted as a comment. Check your work!

Measurement

Note:

•1 m = 100 cm

•1 km = 1000 m

•1 kg = 1000 g

•1ℓ = 1000 mℓ

Try:

309 cm = ____ m ____ cm = ________ m

3009 m  = ____ km ____m = ________km

4.35 km = _________ m

1004 g = ___kg _____g = _________kg

6.03 kg = __________ g

3020 mℓ = ____ ℓ _____mℓ = ________ℓ

1.45 ℓ = _________mℓ

Answers will be posted as comment. Check your work!

Decimals

•When you multiply, the number gets bigger, hence decimal place shifts to the right.

•3.49 x 1000 = 3490

*An easy way to check your answer is use estimation àto round off the decimal to the whole number and multiply

à 3 x 1000 = 3000. Hence, answer should be about 3000.

•When you divide, the number gets smaller, hence decimal place shifts to the left.

•2580 ÷ 1000 = 2.58

*An easy way to check your answer is use estimation

à 2000 ÷ 1000 = 2. Hence, answer should  be about 2.

Try!

•2.48 x 30 = _____________   

2.48 x 30 = 2.48 x 3 x 10 = 7.44 x 10 = 74.4

Ans: 74.4

•468 ÷ 2000 = ____________

468 ÷ 2000 = 468 ÷ 2 ÷ 1000 = 234 ÷ 1000 = 0.234

Ans: 0.234

•4.68 x 200 = ______ x 100

4.68 x 200 = (4.68 x 2) x 100 = 9.36 x 100

Ans: 9.36

•4.68 x 200 = ______ x 10

4.68 x 200 = (4.68 x 20) x 10 = 93.6 x 100

Ans: 93.6

Solution to Geometry Worksheet