Thực hiện phép tính:
a) ( 1012 + 511 . 29 - 513 . 28 ) : 4 . 55 . 106
b) ( 930 - 2719 ) : 357 + ( 1259 - 2512 ) : 524
Ai nhanh nhất mk tk và phải đúng nữa nha!
K
Khách
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4 tháng 12 2023
a: \(\left(-305\right)+400+305\)
\(=\left(-305+305\right)+400\)
=0+400
=400
b: \(\left(-511\right)-\left(-11\right)\)
=-511+11
=-(511-11)
=-500
c: \(0-\left(12345+15\right)\)
\(=0-12360\)
=-12360
d: \(333-\left[\left(-14657\right)+57\right]-78\)
\(=333+14657-57-78\)
\(=\left(333-78\right)+14600\)
\(=255+14600=14855\)
6 tháng 2 2023
2512=(52)12=52.12=524
1259=(53)9=53.9=527
ta có 527>524
=>1259>2512
BC
8
18 tháng 4 2018
bạn tham khảo thử nha!
Hello my name is Kiet. Today, I would to introduce about my neighbourhood. My neighbourhood is in Quang Ngai province. It is noisy but it is clean and convenient. There are Shops, Schools, Restaurants, hotels, market and so on. The streets are busy and crowded during the day. I restaurants best because the food are very good. The people here are very friendly and kind. I living here so much because every thing I need is only five minutes away
18 tháng 4 2018
bạn thử tham khảo bài này!
Hello my name is Thao. Today, I would to introduce about my neighbourhood. My neighbourhood is in Quang Ngai province. It is noisy but it is clean and convenient. There are Shops, Schools, Restaurants, hotels, market and so on. The streets are busy and crowded during the day. I restaurants best because the food are very good. The people here are very friendly and kind. I living here so much because every thing I need is only five minutes away
Mk mak lm mấy cái con toán này
Thì mk sáng mai cx ko lm xng đôu
Bấm mẹ máy tính cho nó nhanh
K mk
\(a)\)\(\frac{10^{12}+5^{11}.2^9-5^{13}.2^8}{4.5^5.10^6}\)
\(=\)\(\frac{2^{12}.5^{12}+2^9.5^{11}-2^8.5^{13}}{2^8.5^{11}}\)
\(=\)\(\frac{2^8.5^{11}\left(2^4.5+2-5^2\right)}{2^8.5^{11}}\)
\(=\)\(2^4.5+2-5^2\)
\(=\)\(80+2-25\)
\(=\)\(57\)
Chúc bạn học tốt ~