简算(数学)
(1)63*18+37*18(2)25*7*4(3)88*125(4)199*71+71(5)188+63+12+37(6)201*34比如:201*34=(200+1)...
(1)63*18+37*18
(2)25*7*4
(3)88*125
(4)199*71+71
(5)188+63+12+37
(6)201*34
比如:201*34
=(200+1)*34
=200*34+1*34
=6800+34
=6834
谢谢
乘法=* 展开
(2)25*7*4
(3)88*125
(4)199*71+71
(5)188+63+12+37
(6)201*34
比如:201*34
=(200+1)*34
=200*34+1*34
=6800+34
=6834
谢谢
乘法=* 展开
1个回答
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(1)63*18+37*18
=18×(63+37)
=18×100
=1800
(2)25*7*4
=25×4×7
=100×7
=700
(3)88*125
=11×8×125
=11×(8×125)
=11×1000
=11000
(4)199*71+71
=(199+1)×77
=200×71
=14200
(5)188+63+12+37
=(188+12)+(63+37)
=200+100
=300
(6)201*34
=(200+1)*34
=200*34+1*34
=6800+34
=6834
=18×(63+37)
=18×100
=1800
(2)25*7*4
=25×4×7
=100×7
=700
(3)88*125
=11×8×125
=11×(8×125)
=11×1000
=11000
(4)199*71+71
=(199+1)×77
=200×71
=14200
(5)188+63+12+37
=(188+12)+(63+37)
=200+100
=300
(6)201*34
=(200+1)*34
=200*34+1*34
=6800+34
=6834
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