Vocabulary
Round Decimals to tenth
Round Decimals to hundredth
Round each number to underlined digit
Addition and Subtraction of Whole Numbers
100

The ___________ is the result of subtracting one number from another

difference

100

Round the number to the nearest tenth.

74.362

74.4

100

Round to nearest hundredth 

43.017

43.02

100

Round each number to the underlined digit:

84.59

85

100

Find the sum:

9,536+495=

10,031

200

Two numbers or expressions that have the same value are ___________.

equivalent

200

Round the number to the nearest tenth

28.45

28.5

200

Round each number to the nearest hundredth

186.555

186.56

200

Round each number to the underlined digit:

2.948

2.95

200

612-357=

255

300

The answer to an addition problem is the _______.

Sum

300

Round the number to the nearest tenth.

13.09

13.1

300

Round the number to the nearest hundredth 

222.222

222.22

300

Round each number to the underlined digit:

30.125

30.13

300

5,052-761=

4,291

400

One way to estimate an answer is to ________ the numbers and then do the calculation.

round

400

Vivica sees that a printer costs $679 and a computer costs $1,358. What is the total cost of the printer and the computer?

$2,037

500

The Pecos River is 926 miles long and the Brazos River is 1,280 miles long. How many miles longer is the Brazos River than the Pecos River?

A. 2,206. miles

B. 1,206 miles

C. 364 miles

D. 354 miles

D. 354 miles

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