Friendly Numbers
What two numbers are our friendly numbers that we use to make it easier?
5 and 10
94 + 16
110
189
How many hundreds?
1
Add 13 + 6
Show or tell me how you used friendly numbers
19
66 + 88
154
179
How many ones?
9
Add 8 + 11
Show or tell me how you used friendly numbers
19
108 + 32
140
302
How many tens?
0
Add 20 + 12
Show or tell me how you used friendly numbers
32
19 + 69
88
How many tens make a hundred?
10
Add 9 + 15
Show or tell me how you used friendly numbers
24
107 + 189
296
1,198
How many thousands?
1