Decimal Review

Addition/Subtraction

100

What is the sum of 42.6 + 0.45 + 30.22?

73.27

200

Solve: 567.998 - 22.9

545.098

300

Round each number to the nearest tenth and subtract:

359.229 - 69.236

359.2 - 69.2 = 290

400

Solve: _____ + 2.9 = 4.4

1.5

500

Solve: _____ + 3.4 = 4.77

1.37

Multiplication

100

Solve: 4.7 x 0.1

.47

200

Solve: 3.84 x 5.9

22.565

300

Solve: 3.344 x 6.42

21.46848

400

What is the value of the digit 9 when 2.09 is multiplied by 10² 

.09 x 100 = 9

500

567.21 x 456.24

258,783.89

Division

100

Which benchmark (0, .25, .50, .75, 1)would be the best choice for the following decimals:

.23      .04       .679     .043

.25

0

.50/.5

0

200

Convert 5/4 to a decimal.

1.25

300

Divide:  .70 divided by 5

0.14

400

Solve: ______ divided by 2 = 2.6

5.2

500

Solve: ______ divided by 3 = 1.6

4.8

Vocabulary

100

What is the answer to a multiplication problem?

Product

200

What is the value of the number in the underlined place?

89.047

seven thousandths or .007 or 7 thousandths

300

Every decimal is a _____________, every _____________ is a _________  ___________.

Every decimal is a FRACTION, every FRACTION is a DIVISION PROBLEM.

400

Spell EACH of the following place values (using words) correctly:

_____ . _____ _____ _____

ones, tenths, hundredths, thousandths

500

Explain and SHOW one strategy for multiplying a decimal by a decimal.

-IMP-ignore, multiply, place

Estimation

100

What is 2.078 rounded to the hundredths place?

2.08

200

Round 567.234 to the tenths place

567.2

300

Round this number to the nearest hundredth: 3.786. Next select TWO numbers with values LESS than the rounded value:

3.79       3.079   37.9   3.77   

3.079

3.77

400

Round 567.015 to the following place values

ten

hundredth

thousandth

570

567.02

567.015

500

Explain, using numbers and words, how to estimate the quotient of 45.012 divided by .78.

round to the nearest whole number (45 & 1)

45 divided by 1= 45