Know the Lingo
Comparing Decimals
Adding Decimals
Subtracting Decimals
Challenge
Reading Decimal Numbers
100

decimals

Another way to represent a fraction using digits to the right of the decimal point.

100

Compare these decimals, which one is larger?

0.2 _____ 0.23

0.23

100

Add these decimals. 1.52 + 8.27

9.79

100

Subtract these decimals.0.95 - 0.71

0.24

100

Ashley found 2 boxes of sugar in the kitchen. The green box is 1.26 kg, and the red box is 1.026 kg. Which box contains more sugar?

The green box.

100

Read the following number:

0.63

sixty-three hundredths

200

decimal point

The separator between the whole number amount and the fractional amount in a decimal number.

200

Compare these decimals, which one is larger?

0.902 _____ 0.920

0.920

200

Add these decimals.

17.67 + 9.54

27.21

200

Subtract these decimals.

2.75 - 1.36

1.39

200

Chelsey is calculating her math average. She figures out her average to be 78.415. Siri is calculating her math average game. She figures out her average to be 78.461. Who has the higher math average?

Siri

200

Read the following number:

56.402

fifty-six and four hundred 2 thousandths

300

hundredth

One of the equal parts when a whole is divided into 100 equal parts.

300

Compare these decimals, which one is larger?

0.202 _____ 0.2023

0.2023

300

Add these decimals. 96.19 + 18.78

114.97

300

Subtract these decimals.

52.15 - 31.36

20.79

300

Farmer Alex lives 0.35 miles away from the farm. His co-worker Jordan lives 39/100 miles away from the same farm. Whose house is farther from the farm?

Jordan's house is farther from the farm.

300

Read the following number:

3,807.054

three thousand, eight hundred seven and fifty-four thousandths

400

tenth

One of the equal parts when a whole is divided into 10 equal parts.

400

Compare these decimals with <, >, or =

0.73 _____ 0.730

=

400

Add these decimals. 84.67 + 29.1

113.77

400

Subtract these decimals.

46.4 - 14.63

31.77

400

The grocery store opened with 23.67 pounds of apples. A customer came in and bought 3.46 pounds of apples. How many pounds of apples did the grocery store have left for sale?

The grocery store had 20.21 pounds of apples left for sale.

400

Read the following number:

80,020.701

eighty thousand, twenty and seven hundred one thousandths

500

digit

A symbol used to represent a numerical amount.

500

Compare these decimals with <, >, or =

0.5003 ____ 0.503

<

500

Add these decimals.

5.02 + 3.408

8.428

500

Subtract these decimals.

2.004 - 1.289

0.715

500

At a customer service center, a short call is defined as any call that is shorter than 5.5 minutes. On a particular call, the customer spoke to one representative for 2.4 minutes and then was transferred to a manager for another 2.9 minutes. Is this call a short call?

Yes

500

Read the following number:

5,032,004.07

five million, thirty-two thousand, four and seven hundredths

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