Solve for X
Fractions
Decimals/Precnets
Unit Conversions
Scientific Notation
100

Solve for X.

9x + 3 = 21

X=2

9(2) + 3 = 21

18 + 3 = 21

100

Add these fractions.

2/5 + 6/8 = ?

2/5 + 6/8 = 46/40 or 1 3/20

2/5 x 8/8 = 16/40

6/8 x 5/5 = 30/40

100

Add these decimals

3.405 + 0.02 = ?

? = 3.425

100

Fabric is sold for $5.99/ yard.

You need 12 yards and 1 foot.

What is your total before taxes?

1 yard= 3 ft

Your total is $77.87

$5.99 x 13 = $77.87

100

Write 10^4 in standard form.

10^4 = 10000

200

Solve for X.

5x - 2 = 8  

X= 2

5(2) - 2 = 8

10 - 2 = 8

200

Subtract these fractions.

18/40 - 2/5 = ?


18/40 - 2/5= 2/40 or 1/20

2/5 x 8/8 = 16/40

18/40 - 16/40 = 2/40

200

What is 5/10 as a decimal?

5/10 = 0.5

200
Convert 72 inches to feet.

1 foot = 12inches

72 inches = 6ft

72 / 12 = 6

200

The Sun's core temperature reaches close close to 2.7 x 10^7 degrees Fahrenheit. How is this written in scientific notation?

2.7 x 10^7 = 27,000,000 degrees Fahrenheit

300

Solve for X.

3x - 4 = 7x + 8

X= -3

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

-9 - 4 = -21 + 8

-13 = -13

300

Multiply these fractions.

5/8 x 9/15= ?

5/8 x 9/15= 45/120 or 3/8

300

What is 7/8 as a percent?

7/8 = 87.5%

300

Convert 8 yards into inches.

1 foot = 12 inches

1 yard = 3 feet

8 yards = 288 inches

8 x 3 x 12 = 288


300

Write 321,000 in scientific notation.

321,000 = 3.21 x 10^5

400

Solve for X.

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

X= 1

3(1) - 2(-2(1) + 7) = -7

3 - 10 = -7

400

Divide these fractions.

6/9  /  7/8 = ?

6/9  /  7/8 = 48/63

6/9 x 8/7 = 48/63

400

Turn 3.476 into a percent.

3.476 = 347.6%

400

Convert 105 lb to kg.

1kg = 2.2046

105lb = 47.627 kg or 47.63

105/2.2046 = 47.627

400

Write 64,960,000,000 in scientific notation.

64,960,000,000 = 6.496 x 10^10

500
Solve for X.

2 (x + 2) - 5 = 3(x + 1)

X= -4

2 (-4 + 2) - 5 = 3(-4 + 1)

-4-5 = -12 + 3

-9 = -9

500

Divide these fractions.

2 3/5  /  1 1/13 =?

2 3/5  /  2 5/20 = 675/100 or 6 3/4

  15/5 x 45/20 = 675/ 100 

500

Turn 790.75% into a decimal.

790.75% =  7.9075

500

Convert 1 yard to centimeters.

1 yard = 3 feet

1 foot = 12 inches

1 inch = 2.54 cm

1 yard = 91.44cm

1 x 36in x 2.54cm = 91.44cm

500

Write 3.06 x 10^-6 in standard form.

3.06 x 10^-6 = 0.00000306 

M
e
n
u
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500