数学题,简便的方法计算,不能简便的话按顺序计算

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热心网友 时间:2023-10-14 10:56

480/(74-34) 126*5-780/6
= 480/40 =630-130
= 12 =500

450-225/5+135 124*5+169/13
= 450-45+135 =620+13
=540 =633

99*425 304+306/17-298
=(100-1)*425 =304+18-298
= 100*425-1*425 =322-298
=42500-425 =24
=42075

101*79-79 (09+23*17)/68
=(101-1)*79 =( 09+391)/68
=100*79 =6800/68
=7900 =100

199*490 256*301
= (200-1)*490 = 256*(300+1)
= 200*490-1*490 =256*300+256*1
=98000-490 =76800+256
=97510 =77056

16*(125*34+88*125)
=16*[125*(134+88)]
= 16*(125*222)
=16*125*222
=2*(8*125)*222
=2*1000*222
=444000

4000/125/4/8 999*778+333+666
=(4000*4)*(125*8) =333*3*778+333*1+333*2
= 16000*1000 =333*(778+1+2)
=16000000 =333*781
=260073

14*44+12*28+32*14 840*39/84
=14*44+12*2*14+32*14 =840/84*39
= 14*(44+24+32) =10*39
=14*100 =390
=1400

.68-27.75 24.96+36.78
=36.93 =61.74

29.45-(5.55-3.74) 0.76+(45.6-24.7)
=29.45-1.81 =0.76+20.9
=27. =21.66

0.45+5.7+11.55+4.3
=(0.45+11.55)+(5.7+4.3)
=12+10
=22

1.等腰3角行有一个角60度,其他两个角都是60度,他是一个等边三角形.
2.个锐角各是60度和30度.
3.第三条边可能是4,5,6,7,8,9,10,11,12cm.
4.三角形其中一个角是50度,他可能是锐角三角形,直角三角形或者钝角三角形.
5.等边三角形的三个内角都是60度.
6.钝角三角形的两个锐角的度数一定小于45度.
7.他的另外一个角是90度.
8.如果角1,角2角3是同一个三角形中的三个内角
(1) 角一等于45度,角2等于90度,角三等于45度.
(2)角一等于60度,角2等于80度, 角三等于40度.

热心网友 时间:2023-10-14 10:56

480/(74-34) 126*5-780/6
= 480/40 =630-130
= 12 =500

450-225/5+135 124*5+169/13
= 450-45+135 =620+13
=540 =633

99*425 304+306/17-298
=(100-1)*425 =304+18-298
= 100*425-1*425 =322-298
=42500-425 =24
=42075

101*79-79 (09+23*17)/68
=(101-1)*79 =( 09+391)/68
=100*79 =6800/68
=7900 =100

199*490 256*301
= (200-1)*490 = 256*(300+1)
= 200*490-1*490 =256*300+256*1
=98000-490 =76800+256
=97510 =77056

16*(125*34+88*125)
=16*[125*(134+88)]
= 16*(125*222)
=16*125*222
=2*(8*125)*222
=2*1000*222
=444000

4000/125/4/8 999*778+333+666
=(4000*4)*(125*8) =333*3*778+333*1+333*2
= 16000*1000 =333*(778+1+2)
=16000000 =333*781
=260073

14*44+12*28+32*14 840*39/84
=14*44+12*2*14+32*14 =840/84*39
= 14*(44+24+32) =10*39
=14*100 =390
=1400

.68-27.75 24.96+36.78
=36.93 =61.74

29.45-(5.55-3.74) 0.76+(45.6-24.7)
=29.45-1.81 =0.76+20.9
=27. =21.66

0.45+5.7+11.55+4.3
=(0.45+11.55)+(5.7+4.3)
=12+10
=22

1)等腰3角行有一个角60度,其他两个角都是60度,他是一个等边三角形。
2.一个直角3角型中,较大锐角是较小锐角2倍。求2个锐角各是60度和30度。
(3)如果三角形的两条边的长分别是5CM和8CM,那么第三条边可能是4,5,6,7,8,9,10,11,12CM(取整数值)
4.有一个三角形,其中一个角是50度,他可能是锐角三角形,直角三角形或者钝角三角形。
5.等边三角形的三个内角都是60度?
6.钝角三角形的两个锐角的度数一定小于90度
7.如果一个三角形两个内角的和是90度,那么他一定是直角三角形,他的另外一个角是90度.(这道题目你应该是打错了,是另外一个角,不是两个角)
8.如果角1,角2角3是同一个三角形中的三个内角
8.(1) 角一等于45度,角2等于90度,那么角三等于45度呢?
8.(2)角一等于60度,角2等于80度, ,那么角三等于40度呢?

温馨提醒:以后不要一下子问那么多问题目,回答的人很辛苦的,当别人回答完了之后,你不要再加题目了,有时人家会注意不到的。像你两次的题目都这么多,分成两个问题比较好。

热心网友 时间:2023-10-14 10:57

480/(74-34) 126*5-780/6
= 480/40 =630-130
= 12 =500
450-225/5+135 124*5+169/13
= 450-45+135 =620+13
= 540 =633
99*425 304+306/17-298
= 425*100-425 =304+18-298
= 42075 =24
101*79-79 (09+23*17)/68
= 100*79+79-79 = (09+391)/68
= 7900 =100
199*490 256*301
= 200*490-490 =256*300+256
= 97510 =76800+256=77056
16*(125*34+88*125)
=16*125(34+88)
= 2000*122=244000
418*201 25**125
= 418*200+418 =24*4*16*125
= 83600+418= 84018 =100*2000=200000
4000/125/4/8 999*778+333+666
= 4000/250 =999*7
= 16 =1000*7-7=788211
14*44+12*28+32*14 840*39/84
= 14*(44+24+32) =10*39
= 1400 =390
.68-27.75 24.96+36.78
= 36.93 = 61.74
= =
29.45-(5.55-3.74) 0.76+(45.6-24.7)
= 29.45-1.81 =0.76+40.9
= 27. =41.66
0.45+5.7+11.55+4.3
=12+10
= 22

热心网友 时间:2023-10-14 10:56

480/(74-34) 126*5-780/6
= 480/40 =630-130
= 12 =500

450-225/5+135 124*5+169/13
= 450-45+135 =620+13
=540 =633

99*425 304+306/17-298
=(100-1)*425 =304+18-298
= 100*425-1*425 =322-298
=42500-425 =24
=42075

101*79-79 (09+23*17)/68
=(101-1)*79 =( 09+391)/68
=100*79 =6800/68
=7900 =100

199*490 256*301
= (200-1)*490 = 256*(300+1)
= 200*490-1*490 =256*300+256*1
=98000-490 =76800+256
=97510 =77056

16*(125*34+88*125)
=16*[125*(134+88)]
= 16*(125*222)
=16*125*222
=2*(8*125)*222
=2*1000*222
=444000

4000/125/4/8 999*778+333+666
=(4000*4)*(125*8) =333*3*778+333*1+333*2
= 16000*1000 =333*(778+1+2)
=16000000 =333*781
=260073

14*44+12*28+32*14 840*39/84
=14*44+12*2*14+32*14 =840/84*39
= 14*(44+24+32) =10*39
=14*100 =390
=1400

.68-27.75 24.96+36.78
=36.93 =61.74

29.45-(5.55-3.74) 0.76+(45.6-24.7)
=29.45-1.81 =0.76+20.9
=27. =21.66

0.45+5.7+11.55+4.3
=(0.45+11.55)+(5.7+4.3)
=12+10
=22

1.等腰3角行有一个角60度,其他两个角都是60度,他是一个等边三角形.
2.个锐角各是60度和30度.
3.第三条边可能是4,5,6,7,8,9,10,11,12cm.
4.三角形其中一个角是50度,他可能是锐角三角形,直角三角形或者钝角三角形.
5.等边三角形的三个内角都是60度.
6.钝角三角形的两个锐角的度数一定小于45度.
7.他的另外一个角是90度.
8.如果角1,角2角3是同一个三角形中的三个内角
(1) 角一等于45度,角2等于90度,角三等于45度.
(2)角一等于60度,角2等于80度, 角三等于40度.

热心网友 时间:2023-10-14 10:57

1.480/(74-34)=480/40=12 2.126*5-780/6=630-130=500 3。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

热心网友 时间:2023-10-14 10:56

480/(74-34) 126*5-780/6
= 480/40 =630-130
= 12 =500

450-225/5+135 124*5+169/13
= 450-45+135 =620+13
=540 =633

99*425 304+306/17-298
=(100-1)*425 =304+18-298
= 100*425-1*425 =322-298
=42500-425 =24
=42075

101*79-79 (09+23*17)/68
=(101-1)*79 =( 09+391)/68
=100*79 =6800/68
=7900 =100

199*490 256*301
= (200-1)*490 = 256*(300+1)
= 200*490-1*490 =256*300+256*1
=98000-490 =76800+256
=97510 =77056

16*(125*34+88*125)
=16*[125*(134+88)]
= 16*(125*222)
=16*125*222
=2*(8*125)*222
=2*1000*222
=444000

4000/125/4/8 999*778+333+666
=(4000*4)*(125*8) =333*3*778+333*1+333*2
= 16000*1000 =333*(778+1+2)
=16000000 =333*781
=260073

14*44+12*28+32*14 840*39/84
=14*44+12*2*14+32*14 =840/84*39
= 14*(44+24+32) =10*39
=14*100 =390
=1400

.68-27.75 24.96+36.78
=36.93 =61.74

29.45-(5.55-3.74) 0.76+(45.6-24.7)
=29.45-1.81 =0.76+20.9
=27. =21.66

0.45+5.7+11.55+4.3
=(0.45+11.55)+(5.7+4.3)
=12+10
=22

1)等腰3角行有一个角60度,其他两个角都是60度,他是一个等边三角形。
2.一个直角3角型中,较大锐角是较小锐角2倍。求2个锐角各是60度和30度。
(3)如果三角形的两条边的长分别是5CM和8CM,那么第三条边可能是4,5,6,7,8,9,10,11,12CM(取整数值)
4.有一个三角形,其中一个角是50度,他可能是锐角三角形,直角三角形或者钝角三角形。
5.等边三角形的三个内角都是60度?
6.钝角三角形的两个锐角的度数一定小于90度
7.如果一个三角形两个内角的和是90度,那么他一定是直角三角形,他的另外一个角是90度.(这道题目你应该是打错了,是另外一个角,不是两个角)
8.如果角1,角2角3是同一个三角形中的三个内角
8.(1) 角一等于45度,角2等于90度,那么角三等于45度呢?
8.(2)角一等于60度,角2等于80度, ,那么角三等于40度呢?

温馨提醒:以后不要一下子问那么多问题目,回答的人很辛苦的,当别人回答完了之后,你不要再加题目了,有时人家会注意不到的。像你两次的题目都这么多,分成两个问题比较好。

热心网友 时间:2023-10-14 10:57

480/(74-34) 126*5-780/6
= 480/40 =630-130
= 12 =500
450-225/5+135 124*5+169/13
= 450-45+135 =620+13
= 540 =633
99*425 304+306/17-298
= 425*100-425 =304+18-298
= 42075 =24
101*79-79 (09+23*17)/68
= 100*79+79-79 = (09+391)/68
= 7900 =100
199*490 256*301
= 200*490-490 =256*300+256
= 97510 =76800+256=77056
16*(125*34+88*125)
=16*125(34+88)
= 2000*122=244000
418*201 25**125
= 418*200+418 =24*4*16*125
= 83600+418= 84018 =100*2000=200000
4000/125/4/8 999*778+333+666
= 4000/250 =999*7
= 16 =1000*7-7=788211
14*44+12*28+32*14 840*39/84
= 14*(44+24+32) =10*39
= 1400 =390
.68-27.75 24.96+36.78
= 36.93 = 61.74
= =
29.45-(5.55-3.74) 0.76+(45.6-24.7)
= 29.45-1.81 =0.76+40.9
= 27. =41.66
0.45+5.7+11.55+4.3
=12+10
= 22

热心网友 时间:2023-10-14 10:57

1.480/(74-34)=480/40=12 2.126*5-780/6=630-130=500 3。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