Addition
15+7
22
10-4
6
Round 16 to the nearest 10
20
The expanded form of 46
40+6
47+51
98
24+6
30
16-6
Round 24 to the nearest 10
20
The expanded form of 89
80+9
76-34
42
31+47
78
38-11
27
Round 236 to the nearest 10
240
The expanded form of 139
100+30+9
Round 822 to the nearest 10
820
603+35
638
79-15
64
Round 113 to the nearest 10
110
The expanded form of 587
500+80+7
Expanded form of 719
700+10+9
462+37
499
237-27
210
Round 525 to the nearest 10
530
The expanded form of 809
800+9
856-142
714