Multi Operations With Decimals

Twin A weighed 7.6 lbs and Twin B weighed 7.13 lbs. How much did they weigh together?

• 14.73 lbs

• 12.4 lbs

• 23,45 lbs

4.34 ÷ 0.2

• 217

• 21.7

• 43.4

• 4340

The perimeter of a rectangle is 37.2 inches. The rectangle has a length of 9.3 inches. What is the width of the rectangle?

• 8.7 inches

• 9.2 inches

• 9.7 inches

• 8.2 inches

Answer explanation

The perimeter of a rectangle is given by the formula P = 2(length + width). Here, 37.2 = 2(9.3 + width). Solving for width gives width = (37.2/2) - 9.3 = 8.2 inches, which is the correct answer.

When a puppy was adopted, it weighed 4.5 pounds. Now it weighs 12.25 pounds. How much weight did the puppy gain?

• 6.75 pounds

• 7.75 pounds

• 8.75 pounds

• 9.75 pounds

The price of a gallon of gasoline is $2.499. How much does it cost to fill an empty 15-gallon gas tank?

• $36.74

• $37.49

• $37.99

• $38.74

Answer explanation

To fill a 15-gallon tank at $2.499 per gallon, multiply: 15 x 2.499 = $37.485. Rounding to two decimal places gives $37.49, which is the correct answer.

• 15.27

• 17.07

• 17.43

• 39.03

1.8 ÷ 0.2

• 9

• 90

• 0.9

• 0.09

20.72 ÷ 8

• 0.259

• 2.59

• 0.625

• 6.2

16.25 × 1.3

• 21.125

• 211.25

• 2112.5

• 21125

Nathlie earns $8.95 per hour.  This week she worked 7.5 hours.  How much did she earn this week?

• $67.125

• $67.12

• $67.13

• $68.00