6th Grade Decimal Operations

Add (+) with Decimals

300

    4.5

+17.3

___________

21.8

400

Calculate the sum of:

  21.452 and 156.3

177.752

500

If Mr. Rosenberg's small dog weighs 18.9 pounds and his big dog weighs 97.46 pounds, how much is their combined weight?

116.36

Subtract (-) with decimals

300

   78.5

- 12.13

_____________

66.37

400

Calculate the difference of:

45.762 and 9.18

36.582

500

Ms. Liz wants to buy materials to make ice cream.  If she has $83.63 and spends $51.02, how much money does she have left?

32.61

Multiply (x) with Decimals

300

Estimate, what whole number with the product be close to?

6.12 x 4.9

6 x 5  = 30 

400

Calculate the product of:

 2.913 and 2.6

7.5738

500

If a rectangle has a base of 4.15 ft and a height of 2.3 ft, what is the area of the rectangle?

9.545 ft2

Algebraic Expressions

300

Evaluate the expression if a=4 and b = 2

a² + b³ - 10 = 

14

400

Evaluate the expression if a=3.1 and b = 5

b² - ab = 

9.5

500

Evaluate the expression if a=4.26 and b=1.3

(3a + b) x b =

18.304