Addition
23 + 43
66
56 - 12
44
3 + _____ = 7
4
874
expanded form?
800+70+4
90 + 20
110
88 - 77
12
10 + _____ = 25
15
four hundred seventy-eight
478
50 + 40 + 30
120
746 - 249
497
75 - _____ = 65
10
734 + 245
hundreds ______
tens ______
ones ______
hundreds 9
tens 7
ones 9
209 + 123 + 415
747
925 - 230
695
20 + 20 + _____ = 80
40
two hundred six
standard form?
206
2456 + 6789
9245
1170 - 200
970
120 - _____ = 85
35
320 , 330 , ___, _____, _____
340, 350, 360.