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.