Algebra
Geometry
Fractions & Decimals
Word Problems
Brain Teasers
100

Solve 2x+3=11

x=4

100

The triangle sum of angles (180°)

57

100

½ + ⅓ = ?

5/6

100

John had 5, got 7 more – how many?

12

100

Odd letter puzzle

seven

200

Factor x²−5x+6

(x−3)(x−2)

200

Define “radius.”

Radius is a line segment from the center of a circle or sphere to its boundary

200

75% as a fraction 

3/4

200

87 treats, gave 8 away

79

200

Add eight 8’s to make 1000

What is eight?

300

Solve 3x−4=11

x=5

300

Area of a 5×7 rectangle

35

300

2.4×10

24

300

Crayon riddle with a chain 58

What is a crayon

300

Next in series 36,34,30,28,24

22

400

x²=64

x=8

400

Circumference = πd, d=4

400

⅘ ÷ ⅖

2

400

Candy left: 8 minus 6

2

400

Golden Ratio ≈?

1.62

500

Solve 2x²−18=0

3

500

7-face solid is called?

heptahedron

500

.125 + .875

1

500

Olivia’s candy puzzle

30

500

What is τ (tau)?

≈6.28

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