Adding Fractions
Subtracting Fractions
Adding Decimals
Subtracting Decimals
Math Rules
100
-5 1/3 + 8 2/3
What is 3 1/3
100
-8 1/2 - 4
What is -12 1/2
100
-13.4 + 8.6
What is -4.8
100
-3.7 - 14.9
What is -18.6
100
Part 1 - what is the sign of the sum of 2 negative numbers? Part 2 - what is the sign of the sum of 2 positive numbers?
What is Part 1 - negative Part 2 - positive
200
4 5/6 + (-1 2/3)
What is 3 1/6
200
7 3/8 - (-2 1/8)
What is 9 1/2
200
7.51 + 22.08
What is 29.59
200
22.43 - 4.07
What is 18.36
200
Double Jeopardy!!!! How can you know what sign will be for the sum of a negative and a positive number?
The answer will have the same sign as the number with the greatest absolute value.
300
-18 7/9 + 7 4/9
What is -11 1/3
300
-26 2/5 - ( -11 1/5)
What is -15 1/5
300
-41.90 + 22
What is 19.90
300
-81.36 - 41.93
What is -123.29
300

What has to happen anytime we have a double negative, (the -(-#))?

What is turning the double negative into a positive?

400

-5 3/5 + 7 3/4 +(-3 7/5)

What is -1 25/20

400

14 1/7 - ( -3 3/14) - (10 2/7)

What is 7 1/14

400

117.4 + 8.93 + (-328.49)

What is -202.16

400

7.85 - ( -31.03) - 9.64

What is 29.24

400
What has to be done before you can add or subtract fractions?
What is make the denominators the same
500

-12 7/8 + (-2 1/2)+(-7 3/4)

What is - 23 1/8

500

-5 3/6 - ( -10 2/3) - ( -5 3/6)

What is 10 2/3

500

- 328.17 + 63.40 + (-117.67)

What is -482.44

500

206.14 - 131.78 - ( -173.85)

What is 248.21

500
What has to be done before you can add or subtract decimals?
What is line up the decimal point (and the place values)