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(456 . 11+ 912) : 13:74
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a) A= ( 5016+912).37:13:74
A= 5928.37:13:74
A=219336:13:74
A=16872:7
A=228
b) B=[687.3+687.7]:(338+1036)
B=687.(3+7):1374
B=687.10:1374
B=6870:1374
B=5
( 456 x 11 + 912 ) x 37 : 13 x 74
= ( 5 016 + 912 ) x 37 : 13 x 74
= 5 928 x 37 : 13 x 74
= 219 336 : 13 x 74
= 16 872 x 74
= 1 248 528
\(27.332+93.43+57.61+69.57\\ =27.332+93.43+57.\left(61+69\right)\\ =27.332+93.43+57.130\\ =8964+3999+7410=20373\\ 34.75+75.66-65.100\\ =\left(34+66\right).75-65.100\\ =100.75-65.100\\ =100.\left(75-65\right)\\ =100.10=1000\\ \left(456.11+912\right).37:13:74\\ =5928:13:\left(74:37\right)\\ =456:2=228\\ 6^2:4.3+2.5^2\\ =36:4.3+2.25\\ =9.3+50=27+50=77\\ 5.4^2-18:3^2\\ =5.16-18:9\\ =80-2=78\\\left[\left(315+372\right).3+\left(372+315\right).7\right]:\left(26.13+74.14\right)\\ =687.\left(3+7\right):\left(338+1036\right)\\ 687.10:1374\\ =6870:1374=5\\ 12:\left\{390:\left[500-\left(125+35.7\right)\right]\right\}\\ =12:\left[390:\left(500-370\right)\right]\\ =12:\left(390:130\right)=12:3=4\\ 192000-\left(1500.2+1800.3+1800.2:3\right)\\ =192000-\left(3000+5400+1200\right)\\ =192000-9600=182400\)
Tính :
( 456 x 11 + 912 ) x 37 : 13 : 74
= ( 456 x 11 + 456 x 2 ) x 37 : 13 : 74
= 456 x ( 11 + 2 ) x 37 : 13 : 74
= 456 x 13 x 37 : 13 : 37 x 2
= 23 x 3 x 19 x 13 x 37 : 13 : 37 x 2
= 8 x 3 x 19 x 37 : 37 x 2
= 4 x 3 x 19
= 228
Mk làm như vầy Không biết đã đúng hay chưa ? Mong các bạn giúp
a. 9999.997 + 9999 + 9999 + 9999
= 9999.(997 + 1 + 1 + 1)
= 9999 . 1000
= 9999000
b. (456 . 11 + 912) . 37 : 13 : 74
= (5016 + 912) . 37 : 13 : 74
= 219336 : 13 : 74
= 16872 : 74
= 228
c. 864 . 48 - 432 . 96 : 864 . 48 . 432
= (864 . 48 - 432 . 96) : (864 . 48 . 432)
= 0 : (864 . 48 . 432)
= 0
a. 9999.997 + 9999 + 9999 + 9999
= 9999.(997 + 1 + 1 + 1)
= 9999 . 1000
= 9999000
b. (456 . 11 + 912) . 37 : 13 : 74
= (5016 + 912) . 37 : 13 : 74
= 219336 : 13 : 74
= 16872 : 74
= 228
c. 864 . 48 - 432 . 96 : 864 . 48 . 432
= (864 . 48 - 432 . 96) : (864 . 48 . 432)
= 0 : (864 . 48 . 432)
= 0
(456x11+912)x37:13:74
=(5016+912)x37:13:74
=5928x37:13:74
=219336:13:74
=16872:74
=228
(456x11+912)x37:13:74=(5016+912)x37:13:74=5928x37:13:74=219336:13:74=228
( 456 .11+912 ) :13 :74=( 5016+912 ) :13 :74=5928:13:74=456:74=6,162