问题
解答题
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答案
①25×32×125,
=(25×4)×(8×125),
=100×1000,
=100000;
②45×55+55×55,
=(45+55)×55,
=100×55,
=5500;
③102×34,
=100×34+2×34,
=3400+68,
=3468.
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①25×32×125,
=(25×4)×(8×125),
=100×1000,
=100000;
②45×55+55×55,
=(45+55)×55,
=100×55,
=5500;
③102×34,
=100×34+2×34,
=3400+68,
=3468.