四年级下册数学简便计算和脱式计算各道两道
答案:2 悬赏:0
解决时间 2021-12-22 15:28
- 提问者网友:追忆成伤
- 2021-12-22 11:35
四年级下册数学简便计算和脱式计算各道两道
最佳答案
- 二级知识专家网友:伤口狠精致
- 2021-12-22 12:42
45.6×9.9
=45.6×(10-0.1)
=45.6×10-4.56
=456-4.56
=4551.44
45.6-0.99
=45.6-1+0.01
=44.6+0.01
=44.61
23.5×12.5×0.08
=23.5×(12.5×0.08)
=23.5×1
=23.5
0.623×2.4+6.23×0.76
=6.23×0.24+6.23×0.76
=6.23×(0.24+0.76)
=6.23×1
=6.23
=45.6×(10-0.1)
=45.6×10-4.56
=456-4.56
=4551.44
45.6-0.99
=45.6-1+0.01
=44.6+0.01
=44.61
23.5×12.5×0.08
=23.5×(12.5×0.08)
=23.5×1
=23.5
0.623×2.4+6.23×0.76
=6.23×0.24+6.23×0.76
=6.23×(0.24+0.76)
=6.23×1
=6.23
全部回答
- 1楼网友:何以畏孤独
- 2021-12-22 13:07
(1)158+262+138
(2)375+219+381+225
(3)5001-247-1021-232
(4)(181+2564)+2719
(5)378+44+114+242+222
(6)276+228+353+219
(7)(375+1034)+(966+125)
(8)(2130+783+270)+1017
(9)99+999+9999+99999
(10)7755-(2187+755)
(11)2214+638+286
(12)3065-738-1065
(13)899+344
(14)2357-183-317-357
(15)2365-1086-214
(16)497-299
(17)2370+1995
(18)3999+498
(19)1883-398
(20)12×25
(21)75×24
(22)138×25×4
(23)(13×125)×(3×8)
(24)(12+24+80)×50
(25)704×25
(26)25×32×125
(27)32×(25+125)
(28)88×125
(29)102×76
(30)58×98
(31)178×101-178
(32)84×36+64×84
(33)75×99+2×75
(34)83×102-83×2
(35)98×199
(36)123×18-123×3+85×123
(37)50×(34×4)×3
(38)25×(24+16)
(39)178×99+178
(40)79×42+79+79×57
(41)7300÷25÷4
(42)8100÷4÷75
(43)16800÷120
(44)30100÷2100
(45)32000÷400
(46)49700÷700
(47)1248÷24
(48)...(1)158+262+138
(2)375+219+381+225
(3)5001-247-1021-232
(4)(181+2564)+2719
(5)378+44+114+242+222
(6)276+228+353+219
(7)(375+1034)+(966+125)
(8)(2130+783+270)+1017
(9)99+999+9999+99999
(10)7755-(2187+755)
(11)2214+638+286
(12)3065-738-1065
(13)899+344
(14)2357-183-317-357
(15)2365-1086-214
(16)497-299
(17)2370+1995
(18)3999+498
(19)1883-398
(20)12×25
(21)75×24
(22)138×25×4
(23)(13×125)×(3×8)
(24)(12+24+80)×50
(25)704×25
(26)25×32×125
(27)32×(25+125)
(28)88×125
(29)102×76
(30)58×98
(31)178×101-178
(32)84×36+64×84
(33)75×99+2×75
(34)83×102-83×2
(35)98×199
(36)123×18-123×3+85×123
(37)50×(34×4)×3
(38)25×(24+16)
(39)178×99+178
(40)79×42+79+79×57
(41)7300÷25÷4
(42)8100÷4÷75
(43)16800÷120
(44)30100÷2100
(45)32000÷400
(46)49700÷700
(47)1248÷24
(48)3150÷15
(49)4800÷25
(50)21500÷125
(51)2356-(1356-721)
(52)1235-(1780-1665)
(53)75×27+19×2 5
(54)31×870+13×310
(55)4×(25×65+25×28) (56)348+163+242+410+537
(57)(2+4+6+……+100)-(1+3+5+……+99) (58)3400-62×34-38×20-38×14(59)454+999×999+545
(60)1992×19911991-1991×19901990
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