Topic 4-1 through 4-3 Review

 $Find\ the\ product\ 64\times100\equiv$  

• 6,000

• 6,400

• 6,200

Round to the nearest tenth  $842.121$  

• 842.1

• 840

• 800

• 842.2

One way to estimate a number is to _________ the number

• Overestimate

• Power

• Round

• Underestimate

 $Find\ the\ product\ 0.365\times10^{4\ }=$  

• 00.365

• 365

• 3,650

• 3.65

Mr. G's binoculars enlarge objects to 10 times their actual size. If the length of an ant is 0.43 inches, what is the length seen in the binoculars?

• 4.3 inches

• 0.43 inches

• 43 inches

Estimate  $\approx0.87\ \times112$  

• 90

• 100

• 172

Estimate  $\approx45.4\times4$  

• 120

• 180

• 250

• 220

A T-shirt costs $12.50 and hats cost $1.95. How much money do you need for 5 T-shirts and 10 hats?

• About $215

• About $75

• About $85

Estimate  $\approx1.67\ \times\ 4$  

• 8

• 12

• 11

• 7

You can use Rounding and __________ numbers to estimate

• Compatible

• Under

• Over

• Guessed