Thực hiện phép tính
a) 997+ 86
b) 37. 38 + 62 . 37
c) 27 . 332 + 68 .27 + 73 . 332 +68 . 78
số 1 tính nhanh A 78 x 31 78 x 24 78 x 17 22 x 72C 53 x 39 47 x 39 53 x 21 47 x 21B 35 x 34 35 x 86 65 x 75 65 x 45D 27 x 332 68 x 27 73 x 332 68 x 73E 2 x 53 x 12 4 x 6 x 37 2 x 38 x 12F 3 x25 x 8 4 x 6 x 37 2 x 38 x 12
số 1 : tính nhanh
A = 78 x 31 + 78 x 24 + 78 x 17 + 22 x 72
C = 53 x 39 + 47 x 39 - 53 x 21 - 47 x 21
B = 35 x 34 + 35 x 86 + 65 x 75 + 65 x 45
D = 27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
E = 2 x 53 x 12 + 4 x 6 x 37 + 2 x 38 x 12
F = 3 x25 x 8 + 4 x 6 x 37 + 2 x 38 x 12
A = 78 x 31 + 78 x 24 + 78 x 17 + 22 x 72
A = 78 x ( 31 + 24 + 17 ) + 22 x 72
A = 78 x 72 + 22 x 72
A = 72 x ( 78 + 22 )
A = 72 x 100
A = 7200
C = 53 x 39 + 47 x 39 - 53 x 21 - 47 x 21
C = 39 x ( 53 + 47 ) - 21 x ( 53 - 47 )
C = 39 x 100 - 21 x 6
C = 3900 - 126
C = 3774
A = 78 x 31 + 78 x 24 + 78 x 17 + 22 x 72
A = 78 x ( 31 + 24 +17 ) + 22 x 72
A = 78 x 72 + 22 x 72
A = 72 x ( 78 + 22 )
A = 72 x 100
A = 7200
27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
= 27 x 332 + 27 x 68 + 73 x 332 + 73 x 68
= 27 x ( 332 + 68 ) + 73 x ( 332 + 68 )
= 27 x 400 + 73 x 400
= ( 27 + 73 ) x 400
= 100 x 400
= 40000
27x332+68x27+73x332+68x73
=27(68+332)+73(332+68)
=(27+73)400
=100.400=40000
27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
= 27.(332+68) + 73 . (332+68)
= 27.400 + 73 . 400
=400.(27+73)
=400.100
=40000
27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
\(27.332+68.27+73.332+68.73\)
\(=27.\left(332+68\right)+73.\left(332+68\right)\)
\(=27.400+73.400\)
\(=\left(27+73\right).400\)
\(=400.100\)
\(=40000\)
27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
= (27+73) x 332 + 68 x (27+73)
= 100 x 332 + 68 x 100
= 100 x (332 + 68)
= 100 x 400
= 40000
27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
=(27+73+332+68)x2
=500x2
=1000
Tính nhanh:
A, 53 x 11+ 79 x 101
B, 45 x 22 + 55 x 23
C, 27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
Bài làm :
\(a,53.11+79.101\)
\(=583+7979\)
\(=8562\)
\(b,45.22+55.23\)
\(=9.5.11.2+55.23\)
\(=55.\left(18+23\right)\)
\(=55.41\)
\(=2255\)
\(c,27.332+68.27+73.332+68.73\)
\(=332.\left(27+73\right)+68.\left(27+73\right)\)
\(=\left(332+68\right).\left(27+73\right)\)
\(=400.100\)
\(=40000\)
Học tốt
Tính nhanh:
a, 27 x 332 + 68 x 27 + 73 x 332 + 68 x 73
b, -2 + 4 + 6 - 8 - 10 + 12 + 14 - 16 - ... - 2002 + 2004 + 2006 - 2008 - 2010
=332 x (27 = 73) + 68 x ( 27 + 73)
= 332 x 100 + 68 x 100
= 33200 + 6800
= 4000
Còn câu b, thì hình như sai đề bạn ạ
Thực hiện phép tính
a) 97 x 24 + 6 x 437 x 2 + 3 x 369 x4
b) 37 x 213 + 86 x 37 + ( 73 x 47 - 68 x 47 ) : 47
c) 49 + 51 x ( 98 - 49 ) + 27 x ( 62 + 37 ) + 73 x ( 43 + 56 )
27 x 332 + 68 x 73 = ?
help me
27*332+68*73=
(27+73)*(332+68)=
100*400
=40000
27 x 332 + 68 x 73
= 8964 + 4964
= 13928
1. thực hiện phép tính :
a/ 27 . 332 + 93 . 43 + 57 . 61 + 69 . 57
b/ 34 . 75 + 75 . 66 - 65 . 100
c/ ( 456 . 11 + 912 ) . 37 : 13 : 74
d/ 62 : 4 . 3 + 2 . 52
e / 5 . 42 - 18 : 32
g/ [ ( 315 + 372 ) . 3 + ( 372 + 315 ) . 7 ] : ( 26 . 13 + 74 .14 )
h/ 12 : { 390 : [ 500 - ( 125 + 35 . 7 ) ] }
k / 192000 - ( 1500 . 2 + 1800 . 3 + 1800 .2 : 3 )
\(27.332+93.43+57.61+69.57\\ =27.332+93.43+57.\left(61+69\right)\\ =27.332+93.43+57.130\\ =8964+3999+7410=20373\\ 34.75+75.66-65.100\\ =\left(34+66\right).75-65.100\\ =100.75-65.100\\ =100.\left(75-65\right)\\ =100.10=1000\\ \left(456.11+912\right).37:13:74\\ =5928:13:\left(74:37\right)\\ =456:2=228\\ 6^2:4.3+2.5^2\\ =36:4.3+2.25\\ =9.3+50=27+50=77\\ 5.4^2-18:3^2\\ =5.16-18:9\\ =80-2=78\\\left[\left(315+372\right).3+\left(372+315\right).7\right]:\left(26.13+74.14\right)\\ =687.\left(3+7\right):\left(338+1036\right)\\ 687.10:1374\\ =6870:1374=5\\ 12:\left\{390:\left[500-\left(125+35.7\right)\right]\right\}\\ =12:\left[390:\left(500-370\right)\right]\\ =12:\left(390:130\right)=12:3=4\\ 192000-\left(1500.2+1800.3+1800.2:3\right)\\ =192000-\left(3000+5400+1200\right)\\ =192000-9600=182400\)