如题所述
第1个回答 2021-07-21
直接是25乘以2乘以2乘以7乘以9=100乘以63=6300即可
第2个回答 2021-07-21
25×14×18
=25×2×7×2×9
=25×(2×2)×(7×9)
=25×4×63
=100×63
=6300
=25×2×7×2×9
=25×(2×2)×(7×9)
=25×4×63
=100×63
=6300
第3个回答 2021-07-21
25x14X18
=5X5XⅠ4x18
=(5X14)X(5X丨8)
=70X90
=6300
=5X5XⅠ4x18
=(5X14)X(5X丨8)
=70X90
=6300
第4个回答 2021-07-21
= 25 * 2 * 2 * 7 * 9
= 100 * 63
= 6300
= 100 * 63
= 6300
第5个回答 2021-07-22
答,原式=25X2X7x2x9=(25X2x2)x(7x9)=100x63=6300