Math Battle

Say What?

100

Mental Math

30+30 + 40 =

100

200

9³

729

300

Mental Math

60 divided by ____ = 5

12

400

Mental Math

3x3x3

27

500

Mental Math

9 x 12 = ?

108

Add!

100

MENTAL MATH

37 + 70 = 

107

200

MENTAL MATH

155 + 245 = ? 

400

300

MENTAL MATH

98 + 99 = 

197

400

MENTAL MATH

30 + __ = 131

101

500

143 + 134 = 

277

Multiply!

100

MENTAL MATH 

4 x 12

48

200

Mental Math

50 x 8 =

400

300

Mental Math

12 x 7 = 

84

400

Mental Math

12 x 11 =

132

500

MENTAL MATH

55 x 3 = 

165

Riddles

100

Riddle: How do you make the number 7 even without addition, subtraction, multiplication, or division?

Answer: Drop the "S".\

200

Riddle: How can you write down eight eights so that they add up to one thousand?

Answer: 888 + 88 + 8 + 8 + 8 = 1000.

300

Riddle: How many times can you subtract the number 5 from 25?

Answer: Once, because after you subtract 5 from 25 it becomes 20.

400

Riddle: How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Answer: It will still be 38°.

500

Riddle: I am a three-digit number. My tens digit is five more than my ones digit. My hundredth digit is eight less than my tenth digit. What number am I?

Answer: Number 194.