\(-37(86)+37\times76\)
(-37).86+(-37).14
\((-37).86+(-37).14\)
\(=(-37).(86+14)\)
\(=(-37).100\)
\(=-3700\)
(-37) x 86+37 x 76
mọi người giải giúp mình với!
(-37) x 86+37 x 76
= 37 x (-86) + 37 x 76
= 37 x [(-86) + 76]
= 37 x (-10)
= -370
tính nhanh
34 * 86 +68 *37
47*25+137*49+47*75-37*49
a)
\(34.86+68.37\)
\(=34.2.43+68.37\)
\(=68\left(43+37\right)=68.70=4760\)
b)
\(47.25+137.49+47.75-37.49\)
\(=47\left(25+75\right)+49\left(137-37\right)\)
\(=47.100+49.100\)
\(=100\left(47+49\right)\)
\(=100.96\)
=9600
34 . 86 + 68 . 37
= 34 . 2 . 43 + 68 . 37
= 68 . 43 + 68 . 37
= 68 . (43 + 37)
= 68 . 100
= 6800
47 . 25 + 137 . 49 + 47 . 75 - 37 . 49
= 47 . (25 + 75) + 49 . (137 - 37)
= 47 . 100 + 49 . 100
= 4700 + 4900
= 9600
a)
\(34.86+68.37\)
\(=34.2.43+68.37\)
\(=68\left(43+37\right)\)
=68.80
=6880
b)
\(47.25+137.49+47.75-37.49\)
=47(25+75) +49(137 - 37 )
=47 . 100+ 49 .100
=100.(47+49)
=100.96
=9600
-37 (86)+37.76
(-37).86 + 37.76
= 37.(-86) + 37.76
= 37.(-86 + 76)
= 37.(-10)
= -370
tính bằng cách hợp lí :
86 . 37 . + 28 . 86 + 14 . 75
tính nhanh
37 x 46 + 37 x 51 + 111
172 x 47 + 86 x8 - 34 x4
35 x 215 - 35 x 210 -175
48 x 56 + 28 x104
\(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
------------
\(172\times47+86\times8-34\times4\)
\(=172\times47+172\times4-34\times4\)
\(=172\times\left(47+4\right)-34\times4\)
\(=172\times51-34\times4\)
\(=172\times3\times17-17\times2\times4\)
\(=17\times\left(172\times3-2\times4\right)\)
\(=17\times\left(516-8\right)\)
\(=17\times508\)
\(=8636\)
------------
\(35\times215-35\times200-175\)
\(=35\times215-35\times200-35\times5\)
\(=35\times\left(215-200-5\right)\)
\(=35\times10\)
\(=350\)
------------
\(48\times56+28\times104\)
\(=48\times2\times28+28\times104\)
\(=28\times\left(48\times2+104\right)\)
\(=28\times200\)
\(=5600\)
17(-84)+17(-16) , 15(58)- 15 (48) , -37(86)+3776
giúp tui nha mấy anh hai
17(-84)+17(-16)
=17[-84+(-16)]
=17x(-100)
=-1700
15(58)-15(48)
=15(58-48)
=15x10
=150
-37(86)+3776
=-3182+3776
594
a)17[-84+(-16)]=17(-100)=-1700
b)15(58-48)=15.10=150
c)-3182+3776=544
Thực hiện phép tính
a) 997+ 86
b) 37. 38 + 62 . 37
c) 27 . 332 + 68 .27 + 73 . 332 +68 . 78
là biếng viết lời giải
1062
3700
40340
còn lời giải thích thì hỏi sau
a)997+86=997+3+83=1000+83=1083
b)37.(38+62)=37.100=3700
c)27.332+68.27+73.332+68.78
=27.332+73.332+68.27+68.78
=332.(27+73)+68.(27+78)
=332.100+68.105
=40340
Bài 1 tính nhanh
A) 37 x 46 + 37 x 51 + 111
B) 35x 215 -35 x 210 - 175
c) 172 x 47 + 86 x 8 - 34 x4
d) 48 x 56 + 28 x104
a) \(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
b) \(35\times215-35\times210-175\)
\(=35\times215-35\times210-35\times5\)
\(=35\times\left(215-210-5\right)\)
\(=35\times0\)
\(=0\)
c) \(172\times47+86\times8-34\times4\)
\(=4\times\left(43\times47+86\times2-34\right)\)
\(=4\times\left(2021+172-34\right)\)
\(=4\times2159\)
\(=8636\)
d) \(48\times56+28\times104\)
\(=48\times56+56\times52\)
\(=56\times\left(48+52\right)\)
\(=56\times100\)
\(=5600\)