34.8×0.25简便计算7.43x6.5-74.3x0.55 83.4÷2.3+31.6÷2.3 49×11+49×36+49x54-49 9999+6666x21+3333x55 题目和这些题都要简便计算,
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![34.8×0.25简便计算7.43x6.5-74.3x0.55 83.4÷2.3+31.6÷2.3 49×11+49×36+49x54-49 9999+6666x21+3333x55 题目和这些题都要简便计算,](/uploads/image/z/247114-10-4.jpg?t=34.8%C3%970.25%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%977.43x6.5-74.3x0.55+83.4%C3%B72.3%2B31.6%C3%B72.3+49%C3%9711%2B49%C3%9736%2B49x54-49+9999%2B6666x21%2B3333x55+%E9%A2%98%E7%9B%AE%E5%92%8C%E8%BF%99%E4%BA%9B%E9%A2%98%E9%83%BD%E8%A6%81%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%2C)
34.8×0.25简便计算7.43x6.5-74.3x0.55 83.4÷2.3+31.6÷2.3 49×11+49×36+49x54-49 9999+6666x21+3333x55 题目和这些题都要简便计算,
34.8×0.25简便计算
7.43x6.5-74.3x0.55 83.4÷2.3+31.6÷2.3 49×11+49×36+49x54-49 9999+6666x21+3333x55 题目和这些题都要简便计算,
34.8×0.25简便计算7.43x6.5-74.3x0.55 83.4÷2.3+31.6÷2.3 49×11+49×36+49x54-49 9999+6666x21+3333x55 题目和这些题都要简便计算,
34.8×0.25=4*0.25*8.7=8.7
7.43x6.5-74.3x0.55=7.43*(6.5-0.55*10)=7.43
83.4÷2.3+31.6÷2.3=(83.4+31.6)/2.3=115/2.3=50
49×11+49×36+49x54-49=49*(11+36+54-1)=49*100=4900
9999+6666x21+3333x55=3333*(3+2*21+55)=3333*100=333300
34.8×0.25=4*0.25*8.7=8.7
7.43x6.5-74.3x0.55=7.43*(6.5-0.55*10)=7.43
83.4÷2.3+31.6÷2.3=(83.4+31.6)/2.3=115/2.3=50
49×11+49×36+49x54-49=49*(11+36+54-1)=49*100=4900
9999+6666x21+3333x55=3333*(3+2*21+55)=3333*100=333300赞同7| 评论
34.8×0.25=(28+6.8)×1/4=7+1.7=8.7
7.43×6.5-74.3×0.55=74.3×0.65-74.3×0.55=74.3×(0.65-0.55)
=74.3×0.1=7.43
83.4÷2.3+31.6÷2.3=(83.4+31.6)÷2.3=115÷2.3=50
49×11+49×36+49x54-49=49×(11+36+54-1)=4900
9999+6666x21+3333x55=1111×(9+6×21+3×55)=1111×(9+126+165)
=1111×300=333300
7.43*6.5-74.3*0.55=7.43*(6.5-5.5)=7.43*1=7.43
83.4/2.3+31.6/2.3=(83.4+31.6)/2.3=115/2.3=50
49×11+49×36+49x54-49 =49*(11+36+54-1)=49*100=4900
9999+6666x21+3333x55=3333*(3+42+55)=333300