Mathpordy

Add/Subtract Negatives

100

55 + (-12) =

43

200

24 - (-12) =

36

300

(-24) + (-13) = 

(-37)

400

(-5) + 13 =

8

500

If it was negative forty degrees outside an hour ago and now it is negative fifty-nine, what was the change in temperature?

(-19)

Multiply/Divide Negatives

100

12 X (-3) =

(-36)

200

(-13)/13 =

(-1)

300

(-7) X (-5) =

(-35)

400

(-543)/4 =

(-135.75)

500

(-1) X (-1) X (-1) X (-1) X (-1) X (-1) X (-1) X (-1) X (-1) X (-1) =

1

Decimal Multiplication

100

0.01 X 0.55 =

0.0055

200

2.1 X 13 = 

27.3

300

5.13 X 11 =

56.43

400

8.21 X 4.1

33.661

500

(-2.1) X 19.11 =

(-40.131)

Decimals to FractionsFractions to Decimals

100

1/4 = 

0.25

200

0.125 =

1/8

300

6/7 =

0.85

400

0.568 =

71/125

500

(-22/26) =

(-0.85)

Proportional Relationships

100

When you visit the beach, you always take 1 sea shell and put it on a necklace. Is the amount of shells on the necklace proportional to the amount of times you visit the beach?

Yes

200

You gather a pile of 99 rocks and start throwing them into a pond. Is the amount of rocks left in the pile proportional to the amount of times you throw a rock?

No

300

You drink a soda once a day and every other day the soda you drink is diet soda. Is the amount of diet sodas you drink proportional to the total amount of sodas you drink?

Yes

400

A woodchuck could chuck ten chunks of wood. When a woodchuck chucks wood, are the wood chuck's wood chucks left proportional to the wood the wood chuck has chucked if a wood chuck could chuck wood?

No.

500

A Gopher digs five feet deep for every twenty feet forward. On Tuesday, the groundskeeper cuts the lawn. Is the depth of the Gopher proportional to the amount of times the lawn is cut?

No.

That's just silly.