Addition
1+7
What is 8
100-1
What is 99
100+200
300
32x2
64
1x2
What is 2
19+20
What is 39
80-7-3
What is 70
75+75
150
44x5
220
4x3
What is 12
198+303
What is 501
1009-400
What is 600
263+488
751
28x9
252
4x4
What is 16
1093+123
What is 1216
1099-463
What is 636
1000+234-478
What is 756
63x7
441
5x4
What is 20
3987+988
4975
8721-575
8176
9631-4755
4876
135x4
540
11x9
99