Decimals and Fractions Adding, Subtracting, Multiplying and Dividing

7.9 - 3.47=

• 11.37

• 4.43

• 3.32

• 4.37

17.2 + 15.65

• 55

• 17.37

• 32.85

• 31.98

-5.04 + (-11) 

• -16.04

• 16.04

• 5.15

• -5.15

64 ÷ 1.6

• 4

• 40

• 400

• 4,000

56.25 ÷ 0.5

• 0.1125

• 11.25

• 1.125

• 112.5

-½ + -⅖ =

• -3/7

• -1/10

• -9/10

• 1/10

-3/4 - 3/4

• 0

• 1

• -1

• 6/4

¾ ÷ ⅘

• 6/7

• 1/2

• 3/5

• 15/16

When adding or subtracting fractions, I must always have a (a)   . I then add or subtract the ​ (b)   and keep ​ (c)   the same.

• Common Denominator

• Numerators

• Denominator

• Common Numerators

• Divisor

• Dividend

When multiplying fractions, I multiply the ​ (a)   and I multiply the ​ (b)   ​ (c)   .

• numerators

• denominators

• straight across

• cross multiply

• least common multiple

• greatest common factor