Estimating Percents of Numbers

Estimate.

¹/₃% of 304

• 100

• 1

• 900

• 9

Estimate.

1.1% of 62

• 0.6

• 6

• 60

• 6.2

Estimate.

150% of 179

• 270%

• 270

• 300

• .270

The brain mass of a newborn baby is about 13% of the body mass of the newborn. If a newborn has a body mass of 2,960 grams, about how much is the mass of the brain?

• 390 g

• 39 g

• 3900 g

• 377 g

An elephant increased its body weight by ¹/₄ % in one day. If the elephant weighed 1176 ponds, about how many pound did it gain?

• 30 lb

• 3 lb

• 0.3 lb

• 300 lb

Estimate.

17% of 83

• 8

• 16

• 14.11

• 160

What is 10% of 50

• 500

• 50

• 5

• .5

What is 50% of 80

• 80

• 8

• 4

• 40

What is 50% of 90

• 90

• 50

• 45

• 4.5

What is 25% of 120

• 120

• 12

• 48

• 30