Fourth Grade Math Review

Area and Perimeter

100

A rectangular pool is 31 feet long and 12 feet wide. What is the perimeter of the pool?

86 feet

200

A rectangular pool is 31 feet long and 12 feet wide. What is the area of the pool?

372 ft²

300

A rectangular picture is 15 cm wide and has an area of 120 square cm.  Find the other side length of the picture.

8 cm

400

The perimeter of a door is 210 inches.  The door is 75 inches tall.  How wide is it?

30 inches

500

The area of a rug is 100 ft².  Find two different possibilities for the dimensions of the rug.

100 x 1

50 x 2

25 x 4

20 x 5

10 x 10

Place Value

100

Write this number in expanded form:

12,356

10,000 + 2,000 + 300 + 50 + 6

200

Write this number in standard form:

(9 x 100,000) + (5 x 1,000) + (7 x 100) + (5 x 10)

905,750

300

Write this number in standard form:

500 + 70 + 4 + 2/10 + 5/100

574.25

400

Write this number in expanded form:

1,035.68

1,000 + 30 + 5 + 6/10 + 8/100

500

Write this number in standard form:

8 thousands

17 hundreds

20 tens

154 ones

8,000 + 1,700 + 200 + 154 = 10,054

Fractions

100

1/3 of 96

32

200

1/2 + 3/4

1 1/4

300

1/3 + 2/6

2/3 or 4/6

400

7/8 - 1/2

3/8

500

1/2 + 1/3

5/6

Factors and Multiples

100

List all the factors of 12.

1, 2, 3, 4, 6, 12

200

List the first 5 multiples of 12

12, 24, 36, 48, 60, 72

300

List all the factors of 32.

1, 2, 4, 8, 16, 32

400

List all the factors of 25

1, 5, 25

500

Explain the difference between a prime number and a composite number.

A prime number only has two factors - one and itself.  A composite number has more than two factors.

Multiplication & Division

100

17 x 20

340

200

19 x 22

418

300

112 ÷ 7

16

400

253 ÷ 11

23

500

110 ÷ 7

15 r5