能简算的简算 1.8×4分之1+2.2×25% 91+91×{13分之2-7分之1}{4.8-4.8×6分之5}÷3分之4{6分之5-4分之1}×49分之3÷4分之3
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能简算的简算 1.8×4分之1+2.2×25% 91+91×{13分之2-7分之1}{4.8-4.8×6分之5}÷3分之4{6分之5-4分之1}×49分之3÷4分之3
能简算的简算 1.8×4分之1+2.2×25% 91+91×{13分之2-7分之1}
{4.8-4.8×6分之5}÷3分之4
{6分之5-4分之1}×49分之3÷4分之3
能简算的简算 1.8×4分之1+2.2×25% 91+91×{13分之2-7分之1}{4.8-4.8×6分之5}÷3分之4{6分之5-4分之1}×49分之3÷4分之3
1.8×4分之1+2.2×25%
=（1.8+2.2）×1/4
=4×1/4
=1
91+91×{13分之2-7分之1}
=91+91×2/13-91×1/7
=91+14-13
=92
{4.8-4.8×6分之5}÷3分之4
=4.8×（1-5/6）×3/4
=4.8×1/6×3/4
=0.8×3/4
=0.6
{6分之5-4分之1}×49分之3÷4分之3
=7/12×3/49×4/3
=1/21
1.8×4分之1+2.2×25%
=1.8×1/4+2.5×1/4
=（1.8+2.2）×1/4
=4×1/4
=1
91+91×{13分之2-7分之1}
=91×（1-2/13-1/7）
=91×64/91
=64
{4.8-4.8×6分之5}÷3分之4
=4.8×(1-5/6)×3/4
=4.8×1/6...
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1.8×4分之1+2.2×25%
=1.8×1/4+2.5×1/4
=（1.8+2.2）×1/4
=4×1/4
=1
91+91×{13分之2-7分之1}
=91×（1-2/13-1/7）
=91×64/91
=64
{4.8-4.8×6分之5}÷3分之4
=4.8×(1-5/6)×3/4
=4.8×1/6×3/4
=0.8×3/4
=0.6
{6分之5-4分之1}×49分之3÷4分之3
=（20/24-6/24）×3/49×4/3
=14/24×3/49×4/3
=1/21
希望能帮到你，@数学辅导团# 祝你学习进步，不理解请追问，理解请及时采纳！(*^__^*)
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1.8×4分之1+2.2×25%
=1.8×4分之1+2.2×1/4
=1/4(1.8+2.2)
=1/4*4
=1
91+91×{13分之2-7分之1}
=91+91*2/13-91*1/7
=91+14-13
=92
{4.8-4.8×6分之5}÷3分之4
=4.8(1-5/6)*3/4
=0.6*3/4
=0.45
{6分之5-4分之1}×49分之3÷4分之3
=14/24*3/49*4/3
=1/21