time
5 x 5 =
25
1 + 60
61
70 rounded by the nearest 100s
100
6 x 12 =
72
5 + 50 =
55
100 rounded by the nearest 10s
100
7x13
91
60 + 6
66
200 rounded by the nearest 100s
200
80 x 3
240
50 + 12
62
400 rounded by the nearest 10
400
5 x 200
1000
60 + 60 =
120
500 rounded by the nearest 100s
500