Multiplying Rational Numbers
Adding Rational Numbers
Subtracting Rational Numbers
Dividing Rational Numbers
Complete the sentence
200

(-4) * 5 =

-20

200

7.824 + 23.5=

31.324

200

38.134 – 31.9=

6.234

200

60 / 5

12

200

Only when subtracting rational numbers we use 

__ __ __ 

stands for _____, ______, ______

When subtracting rational numbers we use KCC stands for keep, change, change. 

400

9 * -7 = 

-63

400

-13 13/10 or -14 3/10

400

-3 4/10 or -3 2/5 

400

-34.6/2

-17.3

400

When multiplying or dividing a positive by a negative we get a _______ signed number.

When multiplying or dividing a negative by a positive we get a ________ signed number.

negative

negative

When multiplying different signs together, the answer will be a negative signed number. 

600

-5 * -5 =

25

600

-14 + -8

-22

600

- 20 - (-4) =

-16

600

-14/2

-7

600

When multiplying or dividing a positive by a positive we get a ______ signed number.

When multiplying or dividing a negative by a negative we get a _______ signed number.

positive

positive

When multiplying the same signs together, the answer will be a positive signed number

800

-79.3 * 3 = 

-237.9

800

–33 + 91

58

800

 –3.37 – 9.668

-13.038

800

542.7/-9

-60.9

800

When adding two numbers of different signs we _______ the number with the smaller _____________ from the number with the bigger _____________. 


We subtract the number with the smaller value from the number with the bigger value. 

1000

-634 * -5.4 =

3423.6

1000

–16 + –25

-31

1000


5 7/6 or 6 1/6

1000

-5/6 divide 1/3

-15/6 or -2 3/6 or -2 1/2

1000

When dividing fractions we _____ the second fraction so that the _denominator_____ is on top and the _numerator_____ is on the bottom. 

We call the second fraction a _________. 

Then we multiply straight across.

Flip the second fraction so that the denominator is on top and the number is on the bottom. 

The second fraction is called a reciprocal.

Then we multiply straight across.