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Grade 3 - Mathematics
6.2 Subtracting Across Zeros
Sometimes when you need to regroup, there is a zero in the next place. Then you need to regroup in a different way.
Method:
Subtract the ones, since you cannot take away from zero, you need to regroyo. The zero becomes 10.
The zero in tens place becomes 9 (since the zero in ones place takes 1 from here)
Again the zero in hundreds place becomes 9 (since the zero in tens place takes 1 from here)
The number in thousands place becomes less by 1(since the zero in hundreds place takes 1 from here)
Example
:
In ones place, 0 becomes 10.
In tens place and hundreds place, 0 becomes 9.
In thousands place, 4 becomes 3.
Answer: 1104
Directions:
Subtract the following. Also write at least ten examples of your own.
Q 1
: 3009 - 866 =
2157
2143
3895
3863
Q 2
: 8004 - 456 =
8745
8452
7548
8540
Q 3
: 1600 - 1190 =
510
110
410
Q 4
: 1900 - 1721 =
180
181
179
Q 5
: 4,000 - 2896 =
1,104
1,210
1,105
Q 6
: 1000 - 600 =
400
600
500
Q 7
: 1300 -1158 =
142
252
152
Q 8
: 3001 - 432 =
2568
3214
2147
2569
Question 9: This question is available to subscribers only!
Question 10: This question is available to subscribers only!
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