Lesson 80

If the chance of rain is 30%, then which is more likely— that it will rain or that it will not rain?

• It will rain

• It will not rain

• Both are equally likely

• It will snow

Monty ran the race 12 seconds faster than Ivan. Monty ran the race in 58 seconds. Ivan ran the race in how many seconds?

• 46 seconds

• 70 seconds

• 58 seconds

• 46 seconds

The whole rectangle is divided into 5 equal parts. Each part is what percent of the rectangle?

• 10%

• 20%

• 25%

• 50%

How many 6-inch-long sticks can be cut from a 72-inch-long stick of sugar cane?

• 10

• 12

• 15

• 8

One fifth of the leaves had fallen. What fraction of the leaves had not fallen?

• 1/5

• 2/5

• 3/5

• 4/5

Which of these arrows could be pointing to 5263?

• Arrow A

• Arrow B

• Arrow C

• None of the arrows

What fraction of the months of the year have 31 days?

• 1/2

• 1/3

• 7/12

• 5/12

The prefix kilo- means what number?

• 10

• 100

• 1000

• 10000

Estimate the sum of 393, 589, and 241 by rounding each number to the nearest hundred before adding.

• 1200

• 1300

• 1400

• 1500

This triangle is equilateral. How many millimeters is the perimeter of the triangle? 2 cm = 20 mm)

• 60 mm

• 9 mm

• 12 mm

• 15 mm