8th Grade Math

Order of Operations

100

(3x4)+(16/2)

What is 20?

200

(12x8)+38+(14/6)

What is 136.3

300

210-118 x (12+45)+21

What is -6,495

400

If a Multiplication sign comes before a subtracting sign,do I start with the subtracting promblem first? Explain.

No because "M" in P.E.M.D.A.S comes before "S".

500

45-12+(-14/2)

What is 26

Adding & subtracting Fractions

100

6/8 + 4/7

What is 1 and 9/28

200

12/-9 + 14/3

What is 3 and 1/3

300

3/4 - 7/8

What is -1/8

400

4/3 - 16/9

What is -4/9

500

-16/9 + 14/11

What is -50/99

Compare F.D.P

100

fraction to percents:5/8

What is 62.5%

200

Fraction to decimal: 16/9

What is 1.78

300

Decimal to percent: 1.05

What is 105%

400

fraction to decimal: 13/4

What is 3.25

500

Fraction to percent: 18/5

What is 360%

Squares and Square Roots

100

What is a simple definition of Square Roots?

When two of the same number is multiplied and makes another number.

200

Square Root: 196

What is 14

300

Square Root: 1.96

What is 1.4

400

Square Root: 49/169

What is 7/13

500

Square Root: -54/36

What is -1.2

Perimeter and Areas

100

Area of a square if the height is 16.5ft

What is 272.25 ft²

200

Area for a rectangle if the height is 12cm and the length is 16cm.

What is 192cm²

300

Perimeter of rectangle if the height is 23.7km and the length is 17.4km

What is 82.2km

400

Area of a Parallelogram if the height is 14mm and the length is 21mm

What is 294mm²

500

I have an area of 392cm for a rectangle. The height is 28cm. Find the length.

What is 14cm.