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Name
6-10
Decide if you need to ungroup. If you need to
ungroup, draw a magnifying glass around the top
number. Then find the answer. Children’s ungroupings may vary.
12
6 13 10
1.
4 10
730
499
__
231
2.
Ungroup to get 10 ones?
Yes
Ungroup to get 10 ones?
Yes
Ungroup to get 10 tens?
Yes
Ungroup to get 10 tens?
No
9
3 10 14
9
2 10 10
© Houghton Mifflin Harcourt Publishing Company
3.
300
167
__
133
4.
404
188
__
216
Ungroup to get 10 ones?
Yes
Ungroup to get 10 ones?
Yes
Ungroup to get 10 tens?
Yes
Ungroup to get 10 tens?
Yes
11
3 12 10
5.
950
639
__
311
6. 502 -
149 = 353
420
183
__
237
Ungroup to get 10 ones?
Yes
Ungroup to get 10 ones?
Yes
Ungroup to get 10 tens?
Yes
Ungroup to get 10 tens?
Yes
UNIT 6 LESSON 10
Subtract from Numbers with Zeros
175