
简便计算 5.4×0.68+3.4×2×0.46 23.9—0.6×0.6-0.64 13÷12.5 7.8×4.86÷3.9
5.4×0.68+3.4×2×0.46,23.9—0.6×0.6-0.64,13÷12.5,7.8×4.86÷3.9快一点啊!...
5.4×0.68+3.4×2×0.46 ,
23.9—0.6×0.6-0.64 ,
13÷12.5 ,
7.8×4.86÷3.9
快一点啊! 展开
23.9—0.6×0.6-0.64 ,
13÷12.5 ,
7.8×4.86÷3.9
快一点啊! 展开
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5.4×0.68+3.4×2×0.46
=5.4x0.68+6.8x0.46
=5.4x0.68+0.68x4.6
=(5.4+4.6)x0.68
=10x0.68
=6.8
23.9—0.6×0.6-0.64
=23.9-(0.36+0.64)
=23.9-1
=22.9
13÷12.5
=(13x8)÷(12.5x8)
=104÷100
=1.04
7.8×4.86÷3.9
=4.6x7.8÷3.9
=4.6x2
=9.2
=5.4x0.68+6.8x0.46
=5.4x0.68+0.68x4.6
=(5.4+4.6)x0.68
=10x0.68
=6.8
23.9—0.6×0.6-0.64
=23.9-(0.36+0.64)
=23.9-1
=22.9
13÷12.5
=(13x8)÷(12.5x8)
=104÷100
=1.04
7.8×4.86÷3.9
=4.6x7.8÷3.9
=4.6x2
=9.2
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