57 + 100 =
157
175 - 50 =
125
250 - 50 = 100 + 50 + ______
50
20 ones + 3 tens = 70 - ______
20
143 + 54 =
197
37 + 24 =
61
24 + ______ = 46
22
_______ - 100 = 26
126
181 - 43 =
138
88 - 14 =
74
171 - 63 =
108
55 + 10 =
65
63 - 55 =
8
42 + 59 =
101
6 tens + 4 tens = 85 + ______
15