21.5×0.49+2.15×5.1=2.15*(0.49+5.1)=2.15*5.59(我說(shuō)是不是0.51呀.)
7.9×9.9=7.9*(10-0.1)=79-0.79=78.21
39
?
找規(guī)律填數(shù):
25.612.8 6.4(3.2) ( 1.6) 0.80.4
21.5×0.49+2.15×5.1簡(jiǎn)算
21.5×0.49+2.15×5.1簡(jiǎn)算
在補(bǔ)充幾道
7.9×9.9(簡(jiǎn)算)
39
( )÷25=—— =26÷( )=0.52=( )%
( )
找規(guī)律填數(shù):
25.6 12.8 6.4 ( ) ( ) 0.8 0.4
第3題位置錯(cuò)了
是()分之39
在補(bǔ)充幾道
7.9×9.9(簡(jiǎn)算)
39
( )÷25=—— =26÷( )=0.52=( )%
( )
找規(guī)律填數(shù):
25.6 12.8 6.4 ( ) ( ) 0.8 0.4
第3題位置錯(cuò)了
是()分之39
數(shù)學(xué)人氣:459 ℃時(shí)間:2020-03-30 20:23:21
優(yōu)質(zhì)解答
我來(lái)回答
類似推薦
- 簡(jiǎn)算:20-(2/15+1/21)×105第二題17/19×(6/17×2-5/49)第三題0.12
- 21.5×1.9+2.15×81怎樣簡(jiǎn)算
- 5/7×16×21/5和1/2×1/15+1/3×1/2 怎么簡(jiǎn)算
- (5/4-21/20)/1/15*5怎么簡(jiǎn)算
- 3分之2÷28分之15×21分之5簡(jiǎn)算
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語(yǔ)翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長(zhǎng)為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說(shuō)明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as