简便运算 1、125又7/8*(11.75-4又二十分之三+5/4-0.85) 2、4/25*29*3+0.48*71
简便运算 1、125又7/8*(11.75-4又二十分之三+5/4-0.85) 2、4/25*29*3+0.48*71
1、125又7/8*(11.75-4又二十分之三+5/4-0.85)
=125又7/8*[(11.75+1.25-(4.15-0.85)]
=125又7/8*(13-5)
=(125+7/8)*8
=125*8+7/8*8
=1007
2、4/25*29*3+0.48*71
=0.16*29*3+0.48*71
=0.48*29+0.48*71
=0.48*(29+71)
=0.48*100
=48
125.875除以(11.75-4又二十分之三+二又四分之一-0.35
125.875除以(11.75-4又二十分之三+二又四分之一-0.35
=125.875÷(11.75-4.15+2.25-0.35)
=125.875÷9.5
=13.25
25×1/3除以5/4×10分之三简便运算
25×1/3÷(5/4)×3/10
=25×1/3×4/5×3/10
=2
7/10×11分之9+1/11乘以十分之三的简便运算
7/10×11分之9+1/11乘以十分之三的简便运算
10分之7×11分之9+11分之1×10分之3
=110分之63+110分之3
=110分之66
=5分之3
5又4/7+4又5/7*1/11-12又4/5-8简便运算
5又4/7+4又5/7*1/11-12又4/5-8
=39/7+33/7X1/11-64/5-8
=39/7+3/7-64/5-8
=42/7-64/5-8
=6-64/5-8
=6-8-64/5
=-2-64/5
=负2又5分之64
计算:1257/8×(11.75-四又二十分之三+一又四分之一-0.85 (十
1257/8×(11.75-4又3/20+1又1/4-0.85)
=1257/8×【(11.75+1又1/4)-(4又3/20+0.85)】
=1257/8×【13-5】
=1257/8×8
=1257
(11.75-4又3/20+1又1/4-0.85)÷ 1/125.25
=【(11.75+1又1/4)-(4又3/20+0.85)】÷ 1/125.25
=【13-5】÷ 1/125.25
=8×125.25
=1002
简便运算7/2×99加二十分之7=多少
简便运算7/2×99加二十分之7=多少
7/20*99+7/20
=7/20*(99+1)
=7/20*100
=35
六年级简便运算:(1)2又2/3*(1又7/8-5/6)/[3又1/4/(1/8+1又5/6)] (2)84又4/19*1.375+105又5/19*0.9
= 8/3*(1又7/8-5/6)*(1/8+1又5/6)/3又1/4
= 8/3*(15/8-5/6)*(1/8+11/6)*4/7
=(8/3*15/8-8/3*5/6)*(1/8*4/7+11/6*4/7)
=(5-20/9)*(1/14+22/21)
=25/9*47/42
=1175/378
=(84*19+4)/19*(11/8)+(105*19+5)/19*(9/10)
=4*(21*19+1)/19*11/8+5*(21*19+1)/19*9/10
=11*(21*19+1)/38+9*(21*19+1)/38
=11*(21*19+1)/38+9*(21*19+1)/38
=(21*19+1)/38*(11+9)
=400*10/19
=4000/19
用简便运算计算11又5/6-4又5/8-5又八分之三
11又5/6-4又5/8-5又八分之三
=11又5/6-(4又5/8+5又八分之三)
=11又5/6-10
=1又5/6