Estimate Decimal and Whole

Estimate 56.8 x 4.

• 250

• 200

• 300

• 240

Estimate the product of 9.7 and 3.3

• 33

• 30

• 40

• 41

Estimate the product of 18.5 and 8.4

• 140

• 150

• 160

• 170

Estimate the product of 44.5 and 2.1

• 90

• 80

• 70

• 60

Round to the nearest whole number.

26.57

Round to the nearest whole number.

21.39

Roughly, approximately, and about are all clues for knowing when to round or estimate.

• True

• False

Estimating is finding a value that is CLOSE or APPROXIMATE to the actual value, but it's not exact.

• True

• False

Geoff and Andrea want to combine their money to buy pizza. Geoff has $5.95. Andrea has $8.30. Which expression should they use to estimate the money they have to the nearest whole dollar?

• $6.00 + $8.00

• $5.95 + $8.30

• $6.00 + $8.50

• $5.00 + $8.00