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Adding and Subtracting
Decimal forms
x10 1/10 and comparing
rounding
story problems
100
Use the associative property, then add 

3.25 + 7.1 + 3.5

3.5 + 7.1 + 3.25  or 7.1 +3.25 + 3.5 = 13.85

100

write 357.804 in expanded form 

300 + 50 + 7 + 0.8 + 0.004

100

write a number in which the value of the digit 7 is ten times the value of the digit 7 in the number 4.371

_ . 7 _ _

100

Round 18.641 to the nearest whole number

19.000

100

The distance around the park is 208.94 meters. If Maggie walks around the park twice, how many meters does she walk? 

417.88 meters

200
Use the associative property, then add: 

4.25 + (6.65 + 5.98)

(6.65 + 5.98) + 4.25 = 16.88

200

Write in standard form 

fifteen thousand and one hundred seven thousandths

15,000.107

200

write a number in which the digit 3 is one tenth the value of the digit 3 in 7.534

_ . _ _ 3

200

round 3.087 to the nearest hundredth 

3.090

200

Ray bought a bike for $79.98 and a helmet for $34.85 on a tax-free day at a sports store. The store clerk game him a discount of $17.50 for both items. If Ray gave the clerk $140, how much change will he receive back? 

$42.67

300

366.35 + 14.78 =


381.13

300

write in word form: 

8.67

eight and sixty seven hundredths 

300

in which number is 3.614 or 26 is the value of the 6 greater? 

26

300

Round 43.549 to the nearest tenth

43.500

300

At Brian's school, the two fastest runners in 100 yard dash had race times of 13.19 seconds and 13.38 seconds

round both these numbers to the nearest tenth 

13.20 and 13.40

400

4.61 - 3.82

0.79

400

write in expanded form powers of ten 

72.603

(7x10) + (2x1) + (6 x 1/10) + (3 x 1/1000) =

400

which of these numbers shows the digit 5 with a value of 0.05?

3.105, 8.512, 1.753

1.753

400

round 6.049 to the nearest hundredth 

6.050

400

At Brian's school, the two fastest runners in 100 yard dash had race times of 13.19 seconds and 13.38 seconds.

 How much faster was the first runner than the second runner

0.19 seconds 

500

36.25 - 7.54 = 

28.71

500

write in standard form: 

(3 x 10) + (2 x 1) + (5 x 1/10) + (4 x 1/1000)= 

32.504

500

compare the following 

114  O  2.145

0.2  O   0.20

0.3  O   0.030

1.142  O  0.458

>

=

>

>

500

round 22.643 to the nearest whole number

23

500

Mrs. Paulson went to Old Navy and spent $376.35. Then she went to Nike and bought a pair of shoes for $14.87. How much money did she spend in all?

$391.22