Estimate Decimal and Whole

Ms. Smith bought three new raincoats for her children. Each raincoat cost $28.99. About how much did Ms. Smith spend on the three raincoats and is your answer an overestimate or an underestimate?

• $60 (overestimate)

• $90 (overestimate)

• $60 (underestimate)

• $90 (underestimate)

Estimate

• 7.1

• 7.9

• 6.1

• 6.9

Estimate the square root of 224.

• 15.1

• 15.5

• 14.9

• 14.1

Estimate the square of this non-square number.

• 10.1

• 11.1

• 10.5

• 11.5

Estimate this irrational number.

• 5.5

• 5.9

• 4.5

• 6.1

Estimate the product of 28.21 and 8.02

• 210

• 220

• 230

• 240

Round to the nearest whole number.

37.85

Which of the following is the best estimate for the equation:

70.2-59.7

• 25

• 10

• 3

• 19