Ruchi Math

Solve the Equation

100

-30=y-24

y=-6

200

-3x-6-18=-8-4

-4

300

4(y+3)=6y+12

0

400

7+4(3x-2)=8x+3

1

500

-2/17x - 15/17x = 1

-1

Geometry

100

Area of a 9cm x 2 cm rectangle

18 cm²

200

Area of a triangle equation

A = 1/2 bh

300

If the area of a square is 289 cm², then find the perimeter.

68 cm

400

Area of a triangle with a base of 3cm and a slant of 5cm

6 cm²

500

The side of a square is 7 cm. If its side is doubled, how many times is the new square’s area bigger than the old square’s area?

Four times bigger

Decimals/Percents

100

Convert to a percent: 0.45

45%

200

Convert to a percent: 1/8

12.5%

300

Make it a decimal: 6/16

0.375

400

Find the sale price when the original price is $91.00 and the discount rate is 13%.

$79.17

500

Toby is taking a friend out and has a budget of $103.50. He spends $88 on the meal, but remembers that he needs to tip the server an additional 15%. At the end of the night, how much money does he have left?

$2.30

Probability/Ratios

100

What are the "AND" and "OR" probability rules?

AND: multiply
OR: add

200

If there are 19 red marbles, 2 blue marbles, 5 green marbles, and 12 yellow marbles in a bag, what is the chance of pulling a red marble?

1/2

300

If there are 19 red marbles, 2 blue marbles, 5 green marbles, and 12 yellow marbles in a bag, what is the chance of pulling a red OR blue OR green OR yellow marble?

1

400

If there are 19 red marbles, 2 blue marbles, 5 green marbles, and 12 yellow marbles in a bag, what is the chance of pulling a green OR blue marble?

7/38

500

If there are 19 red marbles, 2 blue marbles, 5 green marbles, and 12 yellow marbles in a bag, what is the chance of pulling a green AND blue marble?

10/1444