Regrouping
567 + 350 = ?
917
135 - 12 = ?
123
In 378, what number is in the tens place?
7 (seventy)
Which is greater? 350 or 200 + 120?
350 is greater
680
674 - 367 = ?
307
300 + 143 = ?
443
When subtracting 567 from 659, which place value do you borrow from?
The hundreds place value (6)
Which is greater? 576 - 147 or 358 + 121 ?
358 + 121 is greater
(576-147=429 and 358+121=479)
What are compatible numbers?
Compatible numbers are numbers that are close to the addends (numbers being added) but easy to add mentally
659 + 182 + 153 = ?
994
954 - 123 = ?
831
How would you set up 156 + 137 using a place value chart?
H T O
1 5 6
1 3 7
Find 567 + 381. Then subtract 481.
467
What is the name of the strategy that involves breaking the number apart and subtracting it in portions?
378 + 298 = ?
676
673 - 252 = ?
421
How many tens are in 300?
Thiry tens
Estimate 557 + 291.
560 + 290 = 850
or 600 + 300 = 900
or 555 + 290 = 845
or any combination of the above.
700 - 137 = ?
563
253 + 514 + 212 = ?
979
If you subtract 125 from 600, what is in the hundreds place of your answer?
4
Find 190 + 35. Then subtract the sum from 359.
134
How many times do you regroup when solving 900 - 653 ?
You regroup two times.