Mod 5 Test Review - Decimals

Tenths Exploration

100

Create and label a numberline using tenths. Show with fractions and decimals.

200

Write the length in centimeters. Use unit, fraction and decimal form. 

6 tenths

6/10

0.6

300

Write the answer in unit, decimal, and fraction form. 

2 tenths = 2/10 =0.2 

8 tenths = 8/10 =0.8 

400

Complete the table. 

(1 tenth) = 1/10 = 0.1 (0.9)

4 tenths = (4/10) = 0.4 --- 0.6 to next whole

(6 tenths) = 6/10 = 0.6 --- 0.4 to next whole

7 tenths = 7/10 = (0.7) --- 0.3 to next whole

500

Write the numbers in expanded form, using decimal form. 

a) 5.3

b) 16.9

c) 547.2

a) 5 + 0.3

b) 10 + 6 + 0.9

c) 500 + 40 + 7 + 0.2

Tenths and Hundredths

100

Decmpose a tenth into tenths and show in a number line using fractions and decimals. 

200

Write the number in fraction and decimal form

a) 4 hundredths

b) 40 hundredths

c) 14 hundredths

d) 41 hundredths

a) 4 hundredths = 4/100 =0.04 

b) 40 hundredths= 40/100 =0.4 

c) 14 hundredths = 14/100 =0.14 

d) 41 hundredths = 41/100 =0.41 

300

Write the number using unit, fraction and decimal form.

3 ones 81 hundredths = 3 81/100 = 3.81 

400

Complete the statements. Answer in decimal form.

0.05, 0.13, 0.28, 0.06, 0.01, 0.01

500

Use the place value chart to complete each statement.

a) tens - 40

b) ones - 0

c) tenths - 0.7

d) hundredths - 0.06

Compare Decimals

100

Write the lengths of the shaded part, then write a sentence to compare.

0.68

0.7

0.68 meters is shorter than 0.7 meters.

200

Use >, <, or = to compare the numbers.

a) 0.41 > 0.38

b) 1.06 < 1.6

c) 3.5 = 3.50

d) 25.28 > 25.2

300

Order the numbers from least to greatest.

0.1, 0.13, 0.25, 0.3

400

List the numbers in order from greatest to least.

6.2, 6.08, 5 6/10, 5 49/100, 4.95

500

List the weights of the rocks from the lightest to the heaviest. 

104/100 kg, 13/10 kg, 1.38 kg, 1 and 4 tenths kg

Addition of Tenths and Hundredths

100

Add. 

2/10 + 34/100

54/100

200

Add. Write your answer as a fraction and a decimal.

a) 4/10 + 61/100

b) 7/10 + 44/100

a) 101/100 = 1 1/100 = 1.01

b) 114/100 = 1 14/100 = 1.14

300

Solve. Write your answer as a fraction and decimal.

1) 47/100 = 0.47

2) 77/100 = 0.77

3) 100/100 = 1.0

400

Solve. Write your answer as a fraction and decimal.

1) 4 8/10 = 4.8

2) 4 89/100 = 4.89

3) 91/100 = 0.91

4) 1 53/100 = 1.53

500

David made a mistake. Instead of renaming 8/10 as 80/100 and then breaking apart 80/100, he broke apart 8/10 into 2/10 and 6/10 and he added incorrectly. The correct calculation should be 9 98/100 + 8/10 = 9 98/100 + 80/100 = 10 78/100 (10.78).

Word Problems

100

A watermelon weighs 4.79 kilograms. A pineapple weighs 1.4 kilograms. What is the combined weight of the watermelon and pineapple?

4 79/100 + 1 4/10 = 6 19/100

(4.79 + 1.40 = 6.19)

The combined weight of the watermelon and pineapple is 6.19 kilograms. 

200

A sheep is 1.17 meters long. A pig is 0.47 meters longer than the sheep. What is the length of the pig?

1 17/100 + 47/100 = 1 64/100

(1.17 + 0.47 = 1.64)

The length of the pig is 1.64 meters. 

300

A wall in Mrs. Smith's living room is 0.78 meters longer than the wall in her bedroom. The wall in Mrs. Smith's bedroom is 4.32 meters long. How long is the wall in her living room?

4 32/100 + 78/100 = 4 110/100 = 5 10/100

(4.32 + 0.78 = 5.10)

The wall in Mrs. Smith's living room is 5.10 meters long. 

400

Pablo has 4 one-dollar bills, 3 dimes, and 9 pennies. Mia has 4 one-dollar bills and 4 pennies. How much money do they have altogether?

4 39/100 + 4 4/100 = 8 43/100

(4.39 + 4.04 = 8.43)

Pablo and Mia have $8.43 altogether. 

500

Gabe solves a magic cube puzzle in 7.64 seconds. That is 4.93 seconds faster than the time it takes his brother to solve the puzzle. How long does it take Gabe's brother to solve the puzzle? 

7 64/100 + 4 93/100 = 11 157/100 = 12 57/100

(7.64 + 4.93 = 12.57)

It takes Gabe's brother 12.57 seconds to solve the puzzle.