Number system - Math for Children,Worksheets, Fun Games ...

[Pages:2]Number system

Exercises:

1. Write in order, the smallest first :

20, 19.5,

19

3 4

2. Which is larger : 13 or 21

16

26

3. Simplify the following by rationalising their denominators.

a) 3 2

b) 3 c) 1 d) 9 2

72

2

23

d) 9 + 2 3 +2 2

4. Write down the first five terms of the sequence whose nth terms are:

a) 4n - 1 b) 2n 2

5. If

2a - b

1

2a + b = 2

calculate the value of a b



Number system

Answers

Exercises: 1. Write in order, the smallest first :

31 20, 19.5,

2

19

3 4

2. Which is larger : 13 or 21

16

26

3. Simplify the following by rationalising their denominators.

a) 3 2 b) 2 2 c) 2 d) 3 6

2

7

2

2

4. Write down the first five terms of the sequence whose nth terms are:

a) 3, 7, 11, 15, 19 b) 2, 8, 18, 32, 50

5. If

2a - b

1

2a + b = 2

calculate the value of a b

11 2



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