Multiplying Rational Numbers

• Positive

• Negative

Tags

CCSS.5.NF.B.4

CCSS.5.NF.B.5

• Positive

• Negative

Tags

CCSS.5.NBT.B.7

Multiply.  

$-1\times\frac{4}{5}$

Tags

CCSS.5.NF.B.4

Multiply.  

$-\frac{1}{4}\times-\frac{4}{3}$

Tags

CCSS.5.NF.B.4

Tags

CCSS.5.NF.B.4

Tags

CCSS.5.NF.B.4

CCSS.5.NF.B.5

CCSS.5.NF.B.6

Describe the error made when someone tried to solve this problem.

• The decimal is in the wrong place, the answer should be 81.4.

• There is no error. This is correct.

• The decimal is in the wrong place, the answer should be 0.814.

• The answer should be negative, because a negative multiplied by a positive equals a negative -8.14.

Tags

CCSS.5.NBT.B.7

CCSS.5.NBT.A.1

• 1.5

• .15

• .015

• 3/20

Tags

CCSS.5.NF.B.4

CCSS.5.NBT.B.7

CCSS.5.NF.B.5

-4.2 x -5

• 21

• -21

• -9.2

• -1.2

Tags

CCSS.5.NBT.B.7

CCSS.5.NBT.A.2

Tags

CCSS.5.NF.B.4

CCSS.5.NF.B.6