Adding Subtracting Patterns unknowns Callenge questions
100
What is 74
31+43
100
What is 41
46-5
100
What is 15
12, 13, 14,__
100
What is 4
19 + ? = 23
150
What is 363
174 + 189
200
What is 109
67+42
200
What is 59
67-8
200
What is 19
18, __, 20, 21
200
What is 2
14 - ? = 12
300
What is 62
231 - 169 =
300
What is 82
23+59
300
What is 74
87-13
300
What is 65
67, __, 63, 61
300
What is 33
45 + ? = 12
450
What is 16
8, ___, 32, 64
400
What is 124
95+29
400
What is 47
94-47
400
What is 86
___, 89, 92, 95
400
What is 42
68 - ? = 26
600
What is 22
2+2+2+2+2+2+2+2+2+2+2
500
What is 163
74+89
500
What is 96
134-38
500
What is 93
102, ___, 84,75
500
What is 9
(89 - ?) + 10 = 90
750
What is 46
(5 times 9) + 1






Adding and Subrating 2 to 3 digits and challenge problems

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