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In order to solve the question, we first use the distributive property for 133:
We then use the distributive property for 33:
We rearrange the exercise into a more practical form:
We solve the middle exercise:
Which results in the final exercise as seen below:
163
\( 140-70= \)
Breaking numbers apart helps you see the place values clearly! When you separate 133 into 100 + 33, you can easily add the tens (30 + 30 = 60) without confusion.
Yes! That's another great method called column addition. Line up 133 over 30, add ones first (3 + 0 = 3), then tens (3 + 3 = 6), then hundreds (1 + 0 = 1).
Remember: place value is key! In 133 + 30, the 3 in the tens place of 133 adds to the 3 in the tens place of 30. The 0 in ones place of 30 adds to the 3 in ones place of 133.
Try estimation! Round 133 to 130, so 130 + 30 = 160. Your exact answer of 163 should be close to this estimate, which it is!
Rearranging uses the commutative property - you can add numbers in any order! Putting 100 + 30 + 30 + 3 groups the tens together (30 + 30 = 60) making mental math easier.
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