SmartKids Math Brain Time

Number Sense

100

What is the value of 7²?

49

200

What is the greatest common factor (GCF) of 18 and 24?

6

300

What is the least common multiple (LCM) of 4 and 6?

12

400

Is −15 an integer, rational, or irrational number?  

Integer

500

What is the absolute value of −32?

32

Algebra Basics

100

Solve: x+5=12

x = 7

200

Solve: 3x=21

x = 7

300

Solve: 2x+4=14

x = 5

400

Solve: 5x−10=20

x = 6

500

Solve: 4(x+3)=28

x = 4

Fractions, Decimals, & Percents

100

What is 1/2 as a decimal?

0.5

200

What is 25% as a fraction?

1/4

300

Simplify: 6/12 

1/2

400

What is 0.75 as a percent?

75%

500

What is 20% of 80?

16

Geometry

100

How many degrees are in a right angle?

90 degrees

200

What is the perimeter of a square with side length 6 units?

24 units

300

What is the area of a rectangle with length 8 and width 5?

40 square units

400

How many sides does a regular hexagon have?

6

500

What is the area of a triangle with base 10 and height 6?

30 square units 

Word Problems

100

If you buy 3 pencils for $2 each, how much do you spend?

$6

200

A number doubled is 18. What is the number?

9

300

You score 45 out of 60 points. What percent did you earn?

75%

400

A car travels 120 miles in 3 hours. What is its average speed?

40 mph

500

You save $15 per week. How much will you save in 8 weeks?

$120