Addition
57+83
140
155-23
132
195 rounds up to what hundred?
200
60+13
73
99-10
89
348+103
451
65-32
33
87 rounds up to what ten?
90
78+29
107
74-22
52
76+22
98
250-150
100
43 rounds down to what ten?
40
103+54
157
49-31
18
305+205
510
87-15
72
79 rounds up to what hundred?
100
278+123
401
177-65
112
62+97
159
94-61
33
430 rounds down to what hundred?
400
123+456
579
285-85
200