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