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A decimal in math is displayed by using a decimal point to separate a larger number from a smaller number. Numbers to the right of the decimal are smaller than the number “1” while numbers to the left are equal to the number “1” or higher. The decimal point goes between units and tenths. For example, the number 54.7 would be displayed as follows:

54.7 has 5 tens, 4 units and 7 tenths OR

54.7 = 50 + 4 + 7/10

1.

Find the correct decimal sentence.

3489.007

3489.007

3000 + 400 + 80 + 9 + .007

3 thousand + 4 hundred + 80 tens + 9 units + .007

3000 + 400 + 80 + 9 + 7/1000

3000 + 400 + 80 + 9 + 7/100

Decimals work in tens and units. One digit to the right of the decimal is equal to tenths. Two digits to the right is equal to hundredths. Three digits to the right is equal to thousandths. In this case, 3489.007 would be 3 thousands, 4 hundreds, 8 tens, 9 units and 7 thousandths or 3000 + 400 + 80 + 9 + 7/1000

2.

Find the correct decimal sentence.

16.3 + 21.4

16.3 + 21.4

3 tens + 7 units + 7/10

10 + 6 + 3/10 + 20 + 1 + 4/10

37 + 7/10

30 + 7 + .7

Decimals work in tens and units so 16.3 would be 1 ten, 6 units and 3 tenths or 10 + 6 + 3/10 and 21.4 would be 2 tens, 1 unit and 4 tenth or 20 + 1 + 4/10

3.

Find the correct decimal sentence.

9.3 + 2.04 + 49.001

9.3 + 2.04 + 49.001

9 + .3 + 2 + .04 + 49 + .001

9 + 3/10 + 2 + 4/100 + 40 + 9 + 1/1000

60 + 3/10 + 4/100 + 1/1000

60 + .341

Decimals work in tens and units. One digit to the right of the decimal is equal to tenths. Two digits to the right is equal to hundredths. Three digits to the right is equal to thousandths. In this case, 9.3 would be 9 units and 3 tenths or 9 + 3/10 and 2.04 would be 2 units and 4 hundredths or 2 + 4/100 and 49.001 would be 4 tens 9 units and 1 thousandth or 40 + 9 + 1/1000

4.

Find the correct decimal sentence.

18.05 - 3.01

18.05 - 3.01

15 + 4/100

18 + .005 - 3 + .001

10 + 8 + 5/100 - 3 + 1/100

18 + 05/100 - 3 + 01/100

Decimals work in tens and units. One digit to the right of the decimal is equal to tenths. Two digits to the right is equal to hundredths. Three digits to the right is equal to thousandths. In this case 18.05 would be 1 ten, 8 units and 5 hundredths or 10 + 8 + 5/100 and 3.01 would be 3 unit and 1 hundredth or 3 + 1/100. Keep a watch on the math symbols to know whether to add or subtract

5.

Find the correct decimal sentence.

27.8 + 36.1

27.8 + 36.1

63 + 9

5 tens + 13 units + 9/10

50 + 13 + 9/10

20 + 7 + 8/10 + 30 + 6 + 1/10

Decimals work in tens and units so 30.7 would be 3 tens, 0 units and 7 tenths or 30 + 0 + 7/10 and 1.1 would be 1 unit and 1 tenth or 1 + 1/10

6.

Find the correct decimal sentence.

93.7 + 111.2

93.7 + 111.2

90 + 3 + 7/10 + 100 + 10 + 1 + 2/10

93 + 7/10 + 111 + 2/10

204 + 9/10

204 + .09

Decimals work in tens and units so 93.7 would be 9 tens, 3 units and 7 tenths or 90 + 3 + 7/10 and 111.2 would be 1 hundred 1 ten, 1 unit and 2 tenth or 100 + 10 + 1 + 2/10

7.

Find the correct decimal sentence.

102.6 + 22.9

102.6 + 22.9

124 + 15/10

100 + 24 + .15

100 + 2 + 6/10 + 20 + 2 + 9/10

100 + 20 + 4 + 15/10

Decimals work in tens and units so 102.6 would be 1 hundred, 2 units and 6 tenths or 100 + 2 + 6/10 and 22.9 would be 2 tens, 2 unit and 9 tenth or 20 + 2 + 9/10

8.

Find the correct decimal sentence.

23.6 + 17.9 - 4.05

23.6 + 17.9 - 4.05

20 + 3 + 6/10 + 10 + 7 + 9/10 - 4 + 5/100

40 + 15/10 - 4 + 5/100

23 + 6/10 + 17 + 9/10 - 4 + 5/100

20 + 3 + 6/10 + 10 + 7 + 9/10 - 4 - 5/100

Decimals work in tens and units. One digit to the right of the decimal is equal to tenths. Two digits to the right is equal to hundredths. Three digits to the right is equal to thousandths. In this case, 23.6 would be 2 tens 3 units and 6 tenths or 20 + 3 + 6/10. 17.9 would be 1 ten, 7 units and 9 tenths or 10 + 7 + 9/10. 4.05 would be 4 units and 5 hundredths or 4 + 5/100. Remember to watch the math symbols for addition and/or subtraction

9.

Find the correct decimal sentence.

.006 + 99.004

.006 + 99.004

6 + 99 + 4/100

6 one hundredths + 90 tens + 9 units + 4/10

.006 + 90 + 9 + 4/1000

6/1000 + 90 + 9 + 4/1000

Decimals work in tens and units. One digit to the right of the decimal is equal to tenths. Two digits to the right is equal to hundredths. Three digits to the right is equal to thousandths. In this case .006 would be 6/1000 and 99.004 would be 9 tens 9 units and 4 thousandths or 90 + 9 + 4/1000

10.

Find the correct decimal sentence.

30.7 - 1.1

30.7 - 1.1

30 + 0 + 7/10 - 1 + 1/10

31 + 8/10

31 + .08

30 + .7 - 1 + .1