Chapter 3 Decimal Review

Chapter 3 Decimal Review

Add, Subtract, Multiply, and Divide Decimals

Add/Subtract Decimals

Line up the decimals and place values.

Add zeros in empty spots

Bring decimal straight down

Add decimal and zero at the end of whole numbers

Multiple Choice

Find the difference
18 - 3.55

• 14.55
• 14.41
• 14.45
• 14.56

Multiple Choice

7.9 - 3.47 =

• 11.37
• 4.43
• 3.32
• 4.37

Multiple Choice

21 + 4.09 =

• 4.30
• 6.19
• 25.09
• 16.91

Multiple Choice

91.55 + 7.6=

• 99.15
• 98.15
• 99.10
• 98.1

Multiply Decimals

Put them vertical (no need to line up decimals or add decimals and zeros)

Multiply as if the are whole numbers

Count the places to the right of any decimal in the multipliers

Move your decimal in the product

Multiple Choice

3.57 x 4.6

• 3.570
• 13.882
• 16.422
• 164.22

Multiple Choice

8.65 x  4

• 32.48
• 34.6
• 34.8
• 346

Divide Decimals

ALways make sure the divisor is a whole number

If it is not you have to move the decimal in the divisor then the dividend

Bring the decimal up into the quotient

Multiple Choice

25.2 ÷ 4

• 6.4
• 5.13
• 5.4
• 6.3

Multiple Choice

1.44 ÷ 0.4

• 36
• 3.6
• 126

Decimal Word Problems

Multiple Choice

Haley and her 4 friends decide to go out to dinner at Applebee's. The bill for their table came to $65.30. If they want to split the bill evenly between them, how much will each person pay?

• $18.10
• $16.33
• $20.13
• $13.06

Multiple Choice

Jacob bought 5 bottles of orange juice at a market. Each bottle cost $2.43. How much did the orange juice cost all together?

• $7.43
• $10.05
• $12.15
• $20.05

Multiple Choice

Carol wants to purchase back to school supplies. She buys 3 notebooks for $1.99 each, 4 pens for $1.23 each, and 5 folders for $1.21 each. If she pays for her items with a $20 bill, how much change will she get back?

• $16.94
• $5.97
• $4.92
• $3.06

Multiple Choice

Shelly paid for a $7.59 paperback book with a $10 dollar bill. How much change did she get back?

• $17.59
• $3.41
• $3
• $2.41

Multiple Choice

Calculate
7.8÷0.03

• 2.6
• 26
• 260
• .26

Multiple Choice

Calculate
5.75÷0.25

• 0.23
• 2.3
• 2.03
• 23