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Decimals and Powers of 10
Metric System
Estimating
Decimal Multiplication
Decimal Division
100

When multiplying decimals by powers of 10, the decimal moves to the ____________ because the value of the number becomes bigger when multiplied.

What is right?

100

How many milliliters are in a liter?

What is 1,000?

100

Round 56.7 to the nearest whole number.

What is 57?

100

Solve:

21.3 * 6

What is 127.8?

100

True or false: When dividing decimals, the divisor (a.k.a. the outside number) does not have to become a whole number.

What is false?

200

When dividing decimals by powers of 10, the decimal moves to the left because the value of the number becomes _______________ when divided.

What is smaller/less?

200

Put these in order from least to greatest: centimeter, kilometer, meter, millimeter

What are millimeter, centimeter, meter, and kilometer?

200

Round 68.7 to the nearest 10.

What is 70?

200

Solve:

31.4 * 1.8

What is 56.52?

200

Solve:

5.46 / 3

What is 1.82?

300

Solve the problem:

3.65 * 104

What is 36,500?

300

Name the rule for the following number sentences: 

2m = 200cm, 50m = 5,000cm, 0.45m = 45cm

What is (* 102) or (* 100)?

300

Make an estimate for 32.3 x 4.9, then solve the estimate.

What is (30 x 5 = 150) or (32 x 5 = 160)?

300

True or false: When multiplying decimals, the decimals do not have to be lined up with each other.

What is true?

300

Solve:

44.1 / 7

What is 6.3?

400

Solve the problem:

98 / 103

What is 0.098?

400

How many kilometers are in 876 meters?

What is 0.876?

400

Make an estimate for 3.9 x 20.1, solve the estimate, then show where to put the decimal in the list of numbers: 

7 8 3 9

What is 4 x 20 = 80, and 78.39?

400

Solve:

9.52 * 3.8

What is 36.176?
400

Solve:

2.1 / 0.3

What is 7?

500

If scientists send a spacecraft to the moon, it should travel at least 2.4 × 105 miles. Write the number of miles in standard form.

What is 240,000?

500

Emma has a piece of string that is 2.3m long. She finds another piece of string that is 30cm long. How long are both pieces of string combined? 

(Hint: start by converting one of your units!)

What is 2.6m OR 260cm long?

500

Make an estimate for 443.2 x 9.9, solve the estimate, then place the decimal in the list of numbers: 

4 3 8 7 6 8

What is 440 x 10 = 4,400 and 4,387.68?

500

Solve:

417.6 * 0.114

What is 47.6064?

500

Solve:

11.5 / 0.05

What is 230?