SF6S IOWA Review

SF-6S IOWA Review

Review Decimal Operations

Important Reminders for Adding and Subtracting Decimals!

Always remember to rewrite and stack your numbers, lining up the decimals.

​

Fill in any gaps with zeros!

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If you are given a whole number, make it a decimal by adding .0

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Multiple Choice

$$2.78+5.1=$$  

Try this example:

• 3.29

• 7.88

Multiple Choice

$$30.4+18+9.02$$  

Try another example:

• 122.4

• 57.42

• 65.43

Multiple Choice

$$100-31.93$$  

Final example:

• 168.16

• 68.07

• 78.4

Fill in the Blank

Review question 1:

3.78 + 6.1 =

.

Fill in the Blank

Review question 2:

40.4 + 16 + 9.03

.

Fill in the Blank

Review question 3:

24.6 - 4.8 =

.

Fill in the Blank

Review question 4:

200 - 31.84 =

.

Fill in the Blank

Review 5:

0.683 + 7 =

.

Important Reminders for Multiplying Decimals

Rewrite and stack your numbers.

But, DO NOT line up the decimals!

​

Multiply!

Remember to add a place holder (0) when you multiply by your second number.

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After adding your products, scoop your decimal into the final answer.

​

Work very carefully!

Calculation errors can be costly!

Multiple Choice

Try this example:

49.7 x 0.08 =

• 3.976

• 14.85

• 3.02

Multiple Choice

Try another example:

07 x 0.009 =

• 0.0063

• 0.063

• 0.63

Fill in the Blank

Review question 6:

29.7 x 0.05 =

Fill in the Blank

Review question 7:

10.2 x 4.2 =

.

Fill in the Blank

Midterm Review Packet question 8:

0.5 x 0.006 =

Fill in the Blank

Review question 9:

3.1 x 3.06 =

.

Fill in the Blank

Review question 10:

23.94 x 8

Important Reminders for Dividing Decimals

When dividing a decimal by a whole number...

When dividing a decimal by a decimal...

Remember, don't stop until you get a zero or repeater!

Multiple Choice

Try this example:

19.2 ÷ 3 =

• 6.4

• 0.3418

• 18.72

• 34.18

Multiple Choice

Try another example:

48.32 ÷8.2 =

• .59

• 5.9

• 59

Fill in the Blank

Review question 11:

21.6 ÷ 0.06 =

Fill in the Blank

Review question 12:

99.36 ÷ 27 =

Fill in the Blank

Review question 13:

16.8 ÷ 2.4 =

Fill in the Blank

Midterm Review Packet question 14:

10.261 ÷ 3.1 =

Fill in the Blank

Review question 15:

29.5 ÷ 0.4 =

.

If you solved any of the problems (1-15) incorrectly, you should try and make corrections You may want to review the slides with helpful hints.