Unit 1 Test Review

Place Value

200

In 9.81, what place is the 1 in?

Hundredths 

400

In 28.465, what place is the 5 in?

Thousandths 

600

129.879 What is the value of the 1?

Hundreds

800

In 1.2437, what digit is worth 1/10 of the digit 4?

3

1000

In 93.4258, what place is 100 times GREATER THAN the 2?

Ones.

Expanded exponent form

200

1,210

(1 x 10³) + (2 x 10²) + (1 x 10¹)

400

95,630

(9 x 10⁴) + (5 x 10³) + (6 x 10²) + (3 x 10¹)

600

50.1

(5 x 10¹) + (1 x 1/10)

800

0.321 

( 3 x 1/10) + (2 x 1/100) + (1 x 1/1000)

1000

259.84

(2 x 10²) + (5 x 10¹) + (9 x 10⁰) + (8 x 1/10) + (4 x 1/100)

Adding Decimals

200

Add these decimals. 21.74 + 8.27

30.01

400

Add these decimals. 6.125 + 18

24.125

600

Add these decimals. 5.2 + 3.11

8.31

800

Add these decimals. 17.809 + 9.54

27.359

1000

Add these decimals. 4.67 + 29.1

33.77

Subtracting Decimals.

200

Subtract these decimals.

3.53 - 2

1.53

400

Subtract these decimals.

10.71 - 0.7

10.01

600

Subtract these decimals.

2.54 - 1.82

0.72

800

Subtract these decimals.

32.05 - 17.29

14.76

1000

Subtract these decimals.

60 - 35.72

24.28

Rounding

200

Round 24.3 to the nearest WHOLE NUMBER

24

400

Round 104.65 to the TENTHS PLACE

104.7

600

Round 3,240. 6 to the nearest WHOLE NUMBER

3,241

800

Round 123.456 to the HUNDREDTHS PLACE

123.46

1000

5,623.778 to the nearest WHOLE NUMBER

5,624