PA Test 2 Review

Miscellaneous Decimals

100

Use words to write this number: 312.891

Three hundred twelve and eight hundred ninety-one thousandths 

200

Use digits and a decimal point to write this number.

Eighty-four and seventeen hundredths.

84.17

300

Use digits and a decimal point to write this number. 

Three hundred seventy-seven and two hundred twenty-eight thousandths

377.228

400

Round 91.384910287 to the nearest ten millionths place.

91.3849103

500

Use words to write this number. 834.18083

Eight hundred thirty-four and eighteen thousand eighty-free hundred thousandths

Multiplying Decimals

100

Multiply. 81,931.265 x 100 

8,193,126.5

200

Multiply. 917.3917 x 1,000

917,391.7

300

Multiply. 93.4 x 8.1

756.54

400

Multiply. 82.12 x 92.73

7614.9876

500

Multiply. 34.178 x 9.072

310.062816

Missing Numbers

100

Find the missing number. M - 314 = 813

M = 1127

200

Find the missing number. 14P = 196

P = 14

300

Find the missing number. 234 + C = 1820

C = 1586

400

Find the missing number. 884.22 - A = 810.3

A = 73.92

500

Find the missing number. 1.3N = 93.27 (round to nearest hundredth) 

N = 71.75

Estimation

100

Estimate the product and then evaluate.

8.333 x 0.9

Approx. 8; 7.4997

200

Estimate the product and then evaluate. 28.11 x 19.33

Approx. 600; 543.3663

300

Estimate the product and then evaluate.

83.3 x 49.2

Approx. 4000; 4098.36 

400

Estimate the product and then evaluate. 84.25 x 9.11

Approx. 800; 767.5175

500

Estimate the product and then evaluate.

93.4 x 0.0015

Approx. 0.09; 0.1401

Dividing Decimals

100

Divide. 84.17 ÷ 100

0.8417

200

Divide. 27.8379 ÷ 10,000

0.00278379

300

0.4839 ÷ 0.013 (round to 2 decimal places)

37.22

400

0.0816 ÷ 0.891 (round to 2 decimal places)

0.09

500

81.39018 ÷ 0.00174 (round to 2 decimal places)

46775.97