456+964*66
Tính bằng cách thuận tiện nhất:
964 x 4 + 964 x 7 + 964 - 964 x 2
\(=964\times\left(4+7+1-2\right)\\ =964\times10\\ =9640\)
=964×4+964×7+964×1-964×2.
=964×(4+7+1-2)
=964×10
=9640
Tinh hop ly:
a , (-234) + |-145| + (-2013) + |+155|+(-66)
b , (-95) . (2-456) - 456 . 95
a. -234 + 145 + (-2013) + 155 +(-66) = -2013
b. -95.(-454)-456.95= 95.(454 -456) = -190
THỰC HIỆN PHÉP CHIA HỢP LÝ :
(44*5)*66:(11*13*15)
(123*456456-456*123123)
\(\frac{44\cdot5\cdot66}{11\cdot13\cdot15}=\frac{11.4.5.3.22}{11.13.3.5}=\frac{88}{13}\)
\(123\cdot456456-456\cdot123123=123\cdot456\cdot1001-123\cdot456\cdot1001=0\)
103 + 456 = ?
567 + 345 - 327 = ?
45 x 66 - 56 + 90 = ?
Ai nhanh nhất mình tick và kết bạn !
103 + 456 = 559
567 + 345 - 327 = 585
45 x 66 - 56 + 90 = 3004
Câu hỏi :
103 + 456 = ?
567 + 345 - 327 = ?
45 x 66 - 56 + 90 = ?
Trả lời :
103 + 456 = 559
567 + 345 - 327 = 585
45 x 66 - 56 + 90 = 3004
Chúc bạn học tốt !
BÀI 4: TÌM Y
y x 500 = 780 000 y x 120 = 12000 y : 145 = 318
y : 213 = 456 y x 70 = 238 y x 78 = 936
462 : y = 66 709 : y = 82
y x 500 = 780 000
y = 780 000 : 500
y = 1560
y x 120 = 12000
y = 12000 : 120
y = 100
y : 145 = 318
y = 318 x 145
y = 46110
y : 213 = 456
y = 456 x 213
y= 97128
y x 70 = 238
y = 238 : 70
y = 3.4
y x 78 = 936
y = 936 : 78
y = 12
462 : y = 66
y = 462 : 66
y = 7
709 : y = 82
y = 709 : 82
y = 8.64634146341
y x 500 = 780 000
y = 780 000 : 500
y = 1560
y x 120 = 12000
y = 12000 : 120
y = 100
y : 145 = 318
y = 318 x 145
y = 46110
y : 213 = 456
y = 456 x 213
y= 97128
y x 70 = 238
y = 238 : 70
y = 3.4
y x 78 = 936
y = 936 : 78
y = 12
462 : y = 66
y = 462 : 66
y = 7
709 : y = 82
y = 709 : 82
y = 8.64634146341
Tìm x: 964 - x = 103
giúp mình với :99 964+ 37
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 )
\(27.332+93.43+57.61+69.57\\ =27.332+93.43+57.\left(61+69\right)\\ =27.332+93.43+57.130\\ =8964+3999+7410=20373\\ 34.75+75.66-65.100\\ =\left(34+66\right).75-65.100\\ =100.75-65.100\\ =100.\left(75-65\right)\\ =100.10=1000\\ \left(456.11+912\right).37:13:74\\ =5928:13:\left(74:37\right)\\ =456:2=228\\ 6^2:4.3+2.5^2\\ =36:4.3+2.25\\ =9.3+50=27+50=77\\ 5.4^2-18:3^2\\ =5.16-18:9\\ =80-2=78\\\left[\left(315+372\right).3+\left(372+315\right).7\right]:\left(26.13+74.14\right)\\ =687.\left(3+7\right):\left(338+1036\right)\\ 687.10:1374\\ =6870:1374=5\\ 12:\left\{390:\left[500-\left(125+35.7\right)\right]\right\}\\ =12:\left[390:\left(500-370\right)\right]\\ =12:\left(390:130\right)=12:3=4\\ 192000-\left(1500.2+1800.3+1800.2:3\right)\\ =192000-\left(3000+5400+1200\right)\\ =192000-9600=182400\)
Bài 7: Thực hiện phép tính (tính hợp lí nếu có thể)
a) 78 349 – 10 240 + 56 711
b) 234. 66 + 54. 80
c) 13. 89 – 43. 17 + 339. 7
d) 2 085 – 1 196 : 26
e) 214. 72 – 45. 214 – 214.27
g) (4568 + 3759) – ( 4563 + 3754)
h) (2546 –1321) – (2530 – 1351)
i)16 . 114 + 53 . 32 k)15 . 56 + 30 + 42 . 15
m) 123 . 456 + 456 . 321 – 256 .
Bài 7: Thực hiện phép tính (tính hợp lí nếu có thể)
a) 78 349 – 10 240 + 56 711
= ( 78 349 + 56 711 ) – 10 240
= 635060 - 10240
= 624820
b) 234. 66 + 54. 80
= 15444 + 4320
= 19760
c) 13. 89 – 43. 17 + 339. 7
= 1157 - 731 + 2373
= (1157 + 2373) - 731
= 3530 - 731
= 2799
d) 2 085 – 1 196 : 26
= 2 085 – 46
= 2039
e) 214. 72 – 45. 214 – 214.27
= 214.( 72 – 45 – 27 )
= 214 . 0
= 0
\(a,=68109+56711=124820\)
\(b,=15444+4320=10764\)
\(c,1157-731+2373=426+2373=2799\)
\(d,=2085-46=2039\)
\(e,214.\left(72-45-27\right)=214.\left(-20\right)=-4200\)
\(g,=8327-1179=7148\)
\(h,=1225-1179=46\)
\(i,2304+1696=4000\)
\(k,=840+30+630=1500\)
\(m,456\left(123+321\right)-256=456.444-256=202464-256=202208\)
g) (4568 + 3759) – ( 4563 + 3754)
= 4568 + 3759 – 4563 - 3754
= ( 4568 - 4563 ) +( 3759 –3754)
= 5 + 5= 10
i)16 . 114 + 53 . 32
= 16 ( 114 + 53 . 2)
= 16 . 220
= 3520
k)15 . 56 + 30 + 42 . 15
= 15 ( 56 + 2 + 42)
= 15 . 100
= 1500
m) 123 . 456 + 456 . 321 – 256 .
= 456 ( 123 + 321) - 256=
= 456 . 444 - 256
= 202464 - 256
= 202258