Show:
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 14.57

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 1/2 + 7 4/9

What is -11 1/18

300

-26 2/3 - ( -11 1/5)

What is -15 7/15

300
-41.90 + 22
What is 19.90
300
-81.36 - 41.93
What is -123.29
300

What do in math to change a subtraction sentence into an addition sentence.

Add the opposite

400

Double Jeopardy!

-3 1/4 + (-7 3/5)

What is -10 17/20

400

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

17 19/30

400

-117.4 + (-8.93)

What is -126.33

400
7.85 - ( -31.03)
What is 38.88
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

What is - 15 3/8

500
-5 3/6 - ( -10 2/3)
What is 5 1/3
500
- 328.17 + 63.40
What is -264.77
500

Double Jeopardy!

-206.14 - 131.752

What is -337.892

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