adding integers
subtracting integers
algebra
multiplication
adding decimals
100
10+10
20
100
what is 100-50
50
100
7y+6x+3+4+7y+1y
14y+7x+7
100
what is 20x5
100
100
what 6.00+5.89
11.89
200
-2+8
6
200
8-(-2)
10
200
9y+8x+3y+7x
12y+15x
300
-2+-7
-9
300
what is 20+60
80
300
10x+9y+9x+20y
19x+29y
400
-7+10
3
400
-2-(-7)
-9
500
8+-2
6
500
7-10
-3
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