计算下面各题,能简算的要简算.45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7(2/3-5/9×3/5)÷7/16 1/9×3+1/9×5+1/9 7/8×3/7+7/8 (1/2+11/8×3/2)÷1/2 (1/3+1/5+1/15)×15(/号后面是分母!前面是

来源:学生作业帮助网 编辑:作业帮 时间:2024/03/29 22:43:18
计算下面各题,能简算的要简算.45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7(2/3-5/9×3/5)÷7/16 1/9×3+1/9×5+1/9 7/8×3/7+7/8 (1/2+11/8×3/2)÷1/2 (1/3+1/5+1/15)×15(/号后面是分母!前面是

计算下面各题,能简算的要简算.45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7(2/3-5/9×3/5)÷7/16 1/9×3+1/9×5+1/9 7/8×3/7+7/8 (1/2+11/8×3/2)÷1/2 (1/3+1/5+1/15)×15(/号后面是分母!前面是
计算下面各题,能简算的要简算.45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7
(2/3-5/9×3/5)÷7/16 1/9×3+1/9×5+1/9 7/8×3/7+7/8
(1/2+11/8×3/2)÷1/2 (1/3+1/5+1/15)×15
(/号后面是分母!前面是分子!)

计算下面各题,能简算的要简算.45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7(2/3-5/9×3/5)÷7/16 1/9×3+1/9×5+1/9 7/8×3/7+7/8 (1/2+11/8×3/2)÷1/2 (1/3+1/5+1/15)×15(/号后面是分母!前面是
45×(3/5+5/9) = 45×8/9 = 40
3/14÷【6/7×(1/3+1/4)】= 3/14÷【6/7×12/7】= 3/14÷2 = 3/28
(7/3+7/4-7/12)×6/7 = 7/3×6/7+7/4×6/7-7/12×6/7 = 2+3/2-1/2 = 3
(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16 = 1/3*16/7 = 16/21
1/9×3+1/9×5+1/9 = 3/9+5/9+1/9 = 9/9 = 1
7/8×3/7+7/8 = 3/8+7/8 = 10/8 = 5/4
(1/2+11/8×3/2)÷1/2 = (1/2+11/8×3/2)×2 = 1/2×2+11/8×3/2×2 = 1 + 33/8 = 41/8
(1/3+1/5+1/15)×15 = 1/3×15 +1/5×15+1/15×15 = 5+3+1 = 9

不会

不会

45*(3/5+5/9)=45*3/5+45*5/9=27+25=52
3/14÷【6/7×(1/3+1/4)】 =3/14÷【6/7*7/12】=3/14÷2=3/7
(7/3+7/4-7/12)×6/7=7/3*6/7+7/4*6/7-7/12*6/7=2+3/2-1/2=2+2/2=3
(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16=1/3÷7/...

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45*(3/5+5/9)=45*3/5+45*5/9=27+25=52
3/14÷【6/7×(1/3+1/4)】 =3/14÷【6/7*7/12】=3/14÷2=3/7
(7/3+7/4-7/12)×6/7=7/3*6/7+7/4*6/7-7/12*6/7=2+3/2-1/2=2+2/2=3
(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16=1/3÷7/161/3*16/7=16/21
1/9×3+1/9×5+1/9 =1/9*(3+5)=1/9*8=8/9
7/8×3/7+7/8=7/8*(3/7+1)=7/8*10/7=10/8=5/4
(1/2+11/8×3/2)÷1/2 =(1/2+33/16)÷1/2=1/2÷1/2+33/16÷1/2=1+33/16*2=1+33/8=41/8
(1/3+1/5+1/15)×15=1/3*15+1/5*15+1/15*15=5+3+1=9

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