簡便方法計算下列各題
巧算速算方法三年級加減法
二、用簡便方法求和：①536+（541+464）+459 ② 588＋264＋148 ③ 8996＋3458＋7546 ④567+558+562＋555＋563 三、用簡便方法求差：① 1870-280-520 ② 4995-（995-480）③ 4250-294＋94 ④ 1272-995 四、用簡便方法計算下列各題：① 478-128+122-72 ② 464-545＋99+345 ③ 537-（...
560+440-300-60簡便計算四年級下冊?
你好！同學。簡便算法過程如下 560+440-300-60 =560-60-300+440 =500-300+440 =200+440 =640
計算下面各題,注意使用簡便方法。 9\/10乘5\/12加4\/7加3\/7 5\/8乘5\/9...
計算下面各題，注意使用簡便方法。9\/10×5\/12+4\/7+3\/7 =3\/8+（4\/7+3\/7）=3\/8+1 =1又3\/8 5\/8×5\/9+3\/8×5\/9 =（5\/8+3\/8）×5\/9 =1×5\/9 =5\/9 13\/10÷7+13\/10×6\/7 =13\/10×1\/7+13\/10×6\/7 =13\/10×（1\/7+6\/7）=13\/10×1 =13\/10 24×（5\/6-...
五年級分數(shù)簡便運算和應用題各200道
二、寫出下列每題在簡便運算時所運用的定律或性質(zhì)(12分)4 +3.2＋5 +6.8 25×(8×0.4)×1.25 7 －(2 － )()()()(＋ + )×72 93.5÷3 16÷2.5 ()()()三、用簡便方法計算。（65分）1125－997 998+1246+9989 （8700＋870＋87）÷87 125×8.8 1.3＋4.25＋3.7＋3....
20-19+18-17.+4-3+2-1用簡便方法計算
20-19+18-17...+4-3+2-1用簡便方法計算 20-19+18-17...+4-3+2-1 =(20-19)+(18-17)+...+(4-3)+(2-1) =1+1+1+...+1(10個1) =10 用簡便方法計算 20-19+18-17+··· ···+4-3+2-1 由題目化解：① 20-19+18-17+···+···+4-3+2-1 =（...
用簡便方法計算的題目
用簡便方法計算例子解析99×12+81×12 解題思路:四則運算規(guī)則(按順序計算,先算乘除后算加減,有括號先算括號,有乘方先算乘方)即脫式運算(遞等式計算)需在該原則前提下進行 解題過程:99×12+81×12 =(99+81)×12 =180×12 =2160
(1+3+5+7+···99)-(2+4+6+8+···+98)用簡便方法計算?
方法一:(1+3+5+……+99)–(2+4+6+……+98)=1+3+5+……99–2–4–6–……–98 =1+(3–2)+(5–4)+(7–6)+…+(99–98)=1+1+1+1+……+1 =1×50 =50
用簡便方法計算。
=9+1 =10 0.875+5.5+8分之1 0.875+1\/8+5.5 =0.875+0.125+5.5 =1+5.5 =6.5 8.6-40分之3-0.25 =8.6-（3\/40+0.25）=8.6-（3\/40+10\/40）=8.6-13\/40 =8.6-0.325 =8.275 以上各題 主要運用加法的交換律、加法結(jié)合律和減法的性質(zhì)進行簡便運算的。
如何計算??
(一)計算題: (1)(-4)(+6)(-7) (2)(-27)(-25)(-3)(-4) (3)0.001*(-0.1)*(1.1) (4)24*(-5\/4)*(-12\/15)*(-0.12) (5)(-3\/2)(-4\/3)(-5\/4)(-6\/5)(-7\/6)(-8\/7) (6)(-24\/7)(11\/8+7\/3-3.75)*24 (二)用簡便方法計算: ...
deeptown36區(qū)域攻略102乘36簡便方法要脫式
3，用簡便方法計算下面各題四年級下冊36x19 3636×19+36=36×（19+1）=36×20=720你好，本題已解答，如果滿意，請點右上角“采納答案”，支持一下。4，0 1 2 6 12 36 96的關(guān)系 詳解0 1 2 6 2x(2+1) 12 6+2x3 36 12+6x4 96 36+12x5 ... 96+36x6 第N個...
舌項15133597942咨詢： 用簡便方法計算下列各題.2.73+0.85+0.15+3.27 3.25 - (0.25+0.86)0.25+3.68 - 0.25+2.32 92.8 - 35.6 - 24.4102*0.45 2.33*0.5*41.2*2.5+0.8*2.5. -
仁壽縣力角回復：
______[答案] (1)2.73+0.85+0.15+3.27 =(2.73+3.27)+(0.85+0.15) =6+1 =7 (2)3.25-(0.25+0.86) =3.25-0.25-0.86 =3-0.86 =2.14 (3)0.25+3.68-0.25+2.32, =(0.25-0.25)+(2.32+3.68) =0+6 =6 (4)92.8-35.6-24.4, =92.8-(35.6+24.4) =92.8-60 =32.8 (5)102*0.45 =(100+2)*0....
舌項15133597942咨詢： 計算下列各題,能簡便計算的用簡便方法計算.5/6+(1/3 - 5/6) 3/10+1/5 - 1/3 7/9+1/12 - 11/18 3 - 5/11 - 17/11 5 - 4/7 - 一又七分之三2 - 2/3 - 7/12 -
仁壽縣力角回復：
______[答案] 5/6+(1/3-5/6)(去括號) =5/6-5/6+1/3 =1/3 3/10+1/5-1/3 =3/10+2/10-1/3 =5/10-1/3 =1/2-1/3(通分) =1/6 7/9+1/12-11/18 =14/18-11/18+1/12 =3/18+1/12 =1/6+1/12 =2/12+1/12 =3/12 =1/4 3-5/11-17/11 =3-(5/11+17/11) =3-22/11 =3-2 =1 5-4/7-一又七分之...
舌項15133597942咨詢： 用簡便方法計算下面各題. ①284+378+122+216 ②125*5*7*8 ③82*99 ④44*27+27*55+27 ⑤960÷6÷16 ⑥1352 - (352+365) ⑦14.25+7.3+5.75+2.7 ????... -
仁壽縣力角回復：
______[答案] ①284+378+122+216 =(284+216)+(378+122) =500+500 =1000; ②125*5*7*8 =(125*8)*(5*7) =1000*35 =35000; ③82*99 =82*(100-1) =82*100-82*1 =8200-82 =8118; ④44*27+27*55+27 =(44+55+1)*27 =100*27 =2700; ⑤960÷6÷16 =960÷(6*16) ...
舌項15133597942咨詢： 用簡便方法計算下面各題. 5.6÷3.59.6÷0.8÷0.44.2*99+4.217.8÷(1.78*4) -
仁壽縣力角回復：
______[答案] ①5.6÷3.5 =5.6÷0.7÷5 =8÷5 =1.6;②9.6÷0.8÷0.4 =9.6÷(0.8*0.4) =9.6÷0.32 =30; ③4.2*99+4.2 =4.2*(99+1) =4.2*100 =420; ④17.8÷(1.78*4) =17.8÷1.78÷4 =10÷4 =2.5.
舌項15133597942咨詢： 用簡便算法計算下列各題(六年級數(shù)學,請把所有的過稱寫出來)(1):9/20*199+9/20(2):199*31/50 -
仁壽縣力角回復：
______[答案] (1):9/20*199+9/20 =9/20*(1+199 =9/20*200 =90 (2):199*31/50 =(200-1)*31/50 =200*31/50-31/51 =124-31/51 =123又19/50
舌項15133597942咨詢： 計算下面各題(能用簡便方法的用簡便方法).22.7*1.25*O.8 ?????????? 3.91*2.8+6.09*2.89.83*(3.8 - 2.3)+1.5*6.17?????????? 3.6*... -
仁壽縣力角回復：
______[答案] (1)22.7*1.25*O.8,=22.7*(1.25*O.8),=22.7*1,=22.7;(2)3.91*2.8+6.09*2.8,=(3.91+6.09)*2.8,=10*2.8,=28;(3)9.83*(3.8-2.3)+1.5*6.17,=9.83*1.5+1.5*6.17,=(9.83+6.17)*1.5,...
舌項15133597942咨詢： 數(shù)學,用簡便方法計算下面各題.
仁壽縣力角回復：
______ 45x25+15x75 =45x25+15x3x25 =45x25+45x25 =45x(25+25) =45x50 =2250 22x28+66x24 =22x28+(22x3)x24 =22x28+22x3x24 =22x28+22x72 =22x(28+72) =22X100 =2200
舌項15133597942咨詢： 計算下面各題,能簡便的用簡便方法計算.25*36*4????? 135*99????? 203 - 135÷5?????97 - 12*6+43 49*99+49????? 5620÷(562*5)37+... -
仁壽縣力角回復：
______[答案] (1)25*36*4, =25*4*36, =100*36, =3600; (2)135*99, =135*(100-1), =135*100-135*1, =13500-135, =13365; (3)203-135÷5, =203-27, =176; (4)97-12*6+43, =97-72+43, =25+43, =68; (5)49*99+49, =49*(99+1), =49*100, =4900; (6)5620÷(562*5), =5620...
舌項15133597942咨詢： 計算下面各題,能用簡便方法計算的要用簡便方法.0.75*18÷0.156.15÷0.125÷0.84.55÷0.28 - 0.471.7*2.5*0.081.89*11 - 1.893.6*0.35+6.4*0.35 -
仁壽縣力角回復：
______[答案] (1)0.75*18÷0.15 =13.5÷0.15 =90; (2)6.15÷0.125÷0.8 =6.15÷(0.125*0.8) =6.15÷0.1 =61.5; (3)4.55÷0.28-0.47 =16.25-0.47 =15.78; (4)1.7*2.5*0.08 =1.7*(2.5*0.08) =1.7*0.2 =0.34; (5)1.89*11-1.89 =1.89*(11-1) =1.89*10 =18.9; (6)3.6*0.35+6.4*0.35 =(3....
舌項15133597942咨詢： 用簡便方法計算下面各題,再用字母表示出來.(1)15.6 - 9.2 - 0.8a - b - c=(2)390÷15÷2a÷b÷c=(3)38*75 - 38*55a*b - a*c= -
仁壽縣力角回復：
______[答案] (1)15.6-9.2-0.8, =15.6-(9.2+0.8), =15.6-10, =5.6; a-b-c=a-(b+c); (2)390÷15÷2, =390÷(15*2), =390÷30, =13; a÷b÷c=a÷(b*c); (3)38*75-38*55, =38*(75-55), =38*20, =760; a*b-a*c=a*(b-c).
