ABCDEFGHIJKLMNOPQRSTU
1
2
3
NA2-4: Know how many ones, tens, and hundreds are in whole numbers to at least 1000
4
5
Write these using digits
6
7
eg)40+3=43
8
9
1) 20+9=
10
2) 70+6=
11
3) 80+1=
12
4) 30+7=
13
5) 30+2=
14
15
Now try using hundreds
16
17
eg)400+30+5=435
18
19
1) 200+40+3=
20
2) 800+70+5=
21
3) 900+20+9=
22
4) 800+20+3=
23
5) 400+70+2=
24
25