30道分数乘法(带答案)? 48道乘法带答案?
一、30道分数乘法(带答案)?
打不出来所以句号代表乘1/2。1/2=1/4太麻烦了,直接告诉你吧,分数乘法很简单,跟整数乘法一样,只要用分子乘分子得到结果的分子,分母乘分母得到结果的分母,然后写出来就好了,随便你写啥。
二、48道乘法带答案?
这里是48道小数乘法题19×3.5=66.5 1×17.4=17.4 6×16.7=100.2
2×12.5=25 2×10.2=20.4 18×0.1=1.8
5×17.4=87 4×19.5=78 1×11.3=11.3
2×9.9=19.8 1×12.8=12.8 6×9.6=57.6
3×6.5=19.5 0×20.2=0 5×9.5=47.5
11×6.8=74.8 19×0.7=13.3 10×7.3=73
5×9.4=47 3×14.7=44.1 3×14.1=42.3
10×5.4=54 6×10.2=61.2 0×16.8=0
13×7.5=97.5 9×2.8=25.2 4×13.4=53.6
10×7.6=76 1×19.3=19.3 5×4.1=20.5
12×0.3=3.6 3×17.6=52.8 4×8.4=33.6
7×0.5=3.5 4×15.7=62.8 5×19.7=98.5
3×4.5=13.5 3×17.5=52.5 3×6.1=18.3
4×12.6=50.4 8.2×2=16.4 11.4×7=79.8
9.9×5=49.5 0.7×18=12.6 7.9×5=39.5
17.2×4=68.8 6.5×14=91 6.4×0=0
三、二次根式计算题30道带答案?
1/6√1又3/5×(-5√3又√3/5)
=1/6√(8/5)×(-5/3√(3/5)
=-5/18√(24/25)
=-5/18×2/5√6
=-1/9√6
(2)√8/a×√2a/b
=√(8/a×2a/b)
=√(16/b)
=4/b(√b)
(3)√2x乘以√2y乘以√x
=√(2x*2y*x)
=2x√y
(4)2√a÷4√b
=√a/2√b
=1/2b√ab
(5)5√xy÷√5x^3
=5√(xy/5x³)
=1/x√5y
(6)√x-y÷√x+y
=1/(x+y)√(x²-y²)
(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)
=√[x(x+y)÷xy²/(x+y)]
=(x+y)/y
(8)√xy乘以√6x÷√3y
=√6x²y÷√3y
=x√2
(9)(√mn-√m/n)÷√m/n(n>0)
=√mn÷m/n-√m/n÷m/n
=n-1(10)√3/8-(-3/4√27/2+3√1/6)
=1/4√6+3/8√6-1/2√6
=1/8√6
(11)2/3√9x+6√x/4-2x√1/x
=2√3x+3/2√x-2√x
=5/2√x
(12)2/a√4a+√1/a-2a√1/a^3
=1/a√a+1/a√a-2/a√a
=0
(13)√0.2m+1/m√5m^3-m√125/m
=1/5√5m+√5m-5√5m
=-19/5√5m
(14)√a+b/a-b-√a-b/a+b-√1/a^2-b^2(a>b>0)
=1/(a-b)√(a²-b²)-1/(a+b)√(a²-b²)-1/(a²-b²)√(a²-b²)
=(a+b-a+b-1)/(a²-b²)√(a²-b²)
=(2b+1)/(a²-b²)√(a²-b²)
解不等式
(15)2x+√32