Estimating with Decimal Operations

4 x 0.03

• 12

• 0.12

• 120

• 0.012

55.78+4.6=

• 60.28

• 55.32

• 56.44

• 60.38

What is the first step when adding and subtracting decimals?

• Line up the numbers on the right

• Line up the decimals by place value

• Add or subtract like normal

• Add in placeholders

Find the product of
7.13 and 5.5 

• 39.215

• 3.9215

• 392.15

• 3921.5

ESTIMATE: 2.3995 X 4.889

• 8

• 15

• 10

• 6

Estimate the product of 28.21 and 8.02.

• 210

• 230

• 220

• 240

Estimate the product of 18.5 and 8.4

• 140

• 160

• 150

• 170

Estimate. (6.1 + 3.1 +.8) x 10.1

• 2.0

• 100

• .100

• 1.00

63 ÷ 6.8

• 10

• 12

• 9

• 8

Paula wants to buy 3 shirts and 2 belts. The shirts cost $16.89 each, and the belts cost $8.97 each. Paula has $45.Which of these amounts is the best estimate of how much more money Paula needs in order to buy the shirts and belts?

• $16

• $10

• $24

• $5