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Adding
Subtracting
Multiplying
All Rules
Comparing & Ordering
100

Round the decimal to the given place-value. 5.031; hundredths

5.03

100

Round the decimal to the given place-value. 27.35; tens

30.00

100

Round the decimal to the given place-value. 2.059; hundredths

2.06

100

What two operations (adding, subtracting, dividing, or multiplying) is it most important for you to LINE up the DECIMALS?

Adding and Subtracting

100

Use < , > or = to compare each pair of decimals 0.06 ______0.60

What is <

200

7.32 + 5.8

13.12

200

38.61 - 5.04

33.57

200

0.9 x 6

5.4

200

What are the rules for adding decimals?

1. ______________ the decimals.

2. Fill in ____________.

3. ________.

4. Bring ____________________.

1. Line up the decimals.

2. Fill in the zeros.

3. Add

4. Bring the decimal down.

200

Use < , >, or = to compare the set of decimals 4.888_______4.880

What is >

300

7.99 + 4.78

12.77

300

75 - 14.25  

60.75

300

3.12 x 8.1

25.272


300

What are the rules for subtracting?

1. Line _________________.

2.  ________________ zeros.

3. ______________.

4. ___________________________.

1. Line up the decimals.

2. Fill in the zeroes.

3. Subtract.

4. Bring the decimal down.

300

Use <, >, or = to compare the set of decimals 2.03_____2.030

What is =

400

75.4 + 0.591

75.991

400

17.891 - 4.52

13.371

400

4.007 x 4.8

19.2336

400

What are the rules for multiplying decimals?

1. ______________.

2. _________ the ________ of digits after the _________ in your problem.

3. Your answer will have that many _______ behind your decimal.

1. Multiply.

2. Count the number of digits after the decimal in your problem.

3. Your answer will have that many numbers behind your decimal.

400

Order each set of decimals from greatest to least. 5.222, 5.202, 5.022, 5.2222

What is 5.2222, 5.222, 5.202, 5.022

500

3.72 + 6.0064

9.7264

500

Kelly's brother weighs 7.71 pounds. Her newborn kitten weighs 0.24 pounds. How much more does Kelly's baby brother weigh than her kitten?

7.47 pounds

500

Ms. Morgan bought 3.5 pounds of bananas at $0.51 a pound and 4.5 pounds of pineapple at $1.19 a pound. How much did she pay for the bananas and the pineapple?

$7.14

500

Can you add zeros to the end of a decimal without changing the value?

Yes

500

Order each set of decimals from greatest to least. 0.04, 0.0404, 0.404, 0.0444

What is 0.404, 0.0444, 0.0404, 0.04