Mathematics 5 Revision

Rounding Off

1

Round 0.0983 to the nearest thousandth.

0.098

2

True or False: 76,886 rounded off to the nearest hundred thousand is 100,000

True

3

True or False: 45,800 rounded to the nearest ten thousand is 40,000

False

4

99,524 rounded off to the nearest 1,000 is ____

100,000

5

88 rounded off to the nearest 1,000 is ____

Zero

Prime Factors

1

8

2 x 2 x 2

2

12

2 x 2 x 3

3

20

2 x 2 x 5

4

30

2x 3 x 5

5

100

2 x 2 x 5 x 5

Addition/ Subtraction

1

-25 + 26 =

1

2

-44 - 6 =

50

3

-6 - (-40) =

34

4

-12 - (-40) =

28

5

-355 - (-138) =

-217

Place Value

1

Write 488 in expanded and standard form.

400 + 80 + 8

2

Write 90,000 + 9,000 + 800 + 80 + 9  in standard form.

99,889

3

What is the largest 4 digit number you can make with 9, 5, 4, 2, and 8?

9,854

4

[9, 5, 4, 2, and 8]
What is the largest 5 digit number you can make with a 2 in the thousands place?

92,854

5

The smallest and largest number you can make with 8, 1, 5, 3, 7 and 8 ...

135,788 and 887,531