Unit 2 Review

Adding Decimals

100

3.47 + 3.53

7

200

0.147 + 5.0

5.147

300

13.006 + 2.08

15.086

400

1,053.050 + 0,204.100

1,257.15

500

7,933.587 + 689.868

8,623.455

Subtracting Decimals

100

10.5 - 2.5

8

200

12.706 - 2.000

10.706

300

834.50 - 352.08

482.42

400

8,194.700 - 5,334.0

2,860.7

500

101.101 - 010.101

91

True/False

100

The value of the 2 in 47.820 is greater than the value of the 2 in 376.429

False, the values are equal

200

87.6 is 100 times the value of .876

True

300

5,893.1 < 5,893.097

False

5,893.1 > 5,893.097 <-- Add .003 to make it equal!

400

3.991 = (3x1) + (9x1/100) + (9x1/10) + (1x1)

False

3.991= (3x1) + (9x1/10) + (9x1/100) + (1x1/1000)

500

The 4 in 4.1 is 1/10 the value of the 4 in 41.87

True

Place Value

100

The value of the 7 in 3.87

7 hundredths or 0.07 or 7/100

200

37.984 written in expanded form

(3x10) + (7x1) + (9x1/10) + (8x1/100) + (4x1/1000)

300

1/100 the value of 8,701.9 is...

87.019 is 1/100 the value of 8,701.9

400

The value of the 7 in 57.03 is _____ times the value of the 7 in 63.71 

The value of the 7 in 57.03 is 10 times the value of the 7 in 63.71

500

The value of the 3 in 6.83 is _____ the value of the 3 in 73.92

The value of the 3 in 6.83 is 1/100 the value of the 3 in 73.92

Comparing and Rounding

100

3.74 rounded to the nearest tenth

3.7

200

Order from least to greatest:

479.091; 479.91; 479.019

479.019; 479.091; 479.91

300

Round 847.999 to the nearest tenth

848

400

Round 54.337 to the nearest hundredth

54.34

500

(4x100) + (3x1/1000) is  <,>,=  four hundred three thousandths

400.003 is > 0.403