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a ) 768 - 549 + 548
= 219 + 548
= 767
b ) ( 647 + 835 ) - ( 645 + 833 )
= 1482 - 1478
= 4
Answer : a ) 767
b ) 4
647-[y:(46+13+54)]=54-32+46
=647-[ y:( 46+13+54) ]=68
=647-[y:113]=68
=647-68
=579
=579x113
=65427
Cả hai kho chứa số tấn gạo là:
12 tấn 753 kg + 8 tấn 247 kg
= 20 tấn 1000 kg = 21 tấn.
Ta có: 21 : 6 = 3 (xe) dư 3 tấn.
Ta thấy 3 tấn dư này cũng cần thêm một xe để chở.
Vậy số xe cần ít nhất là:
3 + 1 = 4 (xe)
Đáp số: 4 xe.
bn cho mình gửi sắp đến thi học kì 2 rồi. đây là những món quà mà bn sẽ nhận đc:
1: áo quần
2: tiền
3: đc nhiều người yêu quý
4: may mắn cả
5: luôn vui vẻ trong cuộc sống
6: đc crush thích thầm
7: học giỏi
8: trở nên xinh đẹp
phật sẽ ban cho bn những điều này nếu cậu gửi tin nhắn này cho 25 người, sau 3 ngày bn sẽ có những đc điều đó. nếu bn ko gửi tin nhắn này cho 25 người thì bn sẽ luôn gặp xui xẻo, học kì 2 bn sẽ là học sinh yếu và bạn bè xa lánh( lời nguyền sẽ bắt đầu từ khi đọc) ( mình
cũng bị ép);-;
Số lớn nhất trong các số 459 495; 459 549; 549 954 và 549 945 là 549 954.
Chọn C.
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Đặt tổng trên là A
\(3xA=\dfrac{15}{2}+\dfrac{5}{2}+\dfrac{5}{6}+\dfrac{5}{18}+\dfrac{5}{54}+\dfrac{5}{162}\)
\(2xA=3xA-A=\dfrac{15}{2}-\dfrac{5}{468}\)
Từ đó suy ra A
a) 378 + 459 + 162 - 359
= 378 + 162 + 100
= 540 + 100
= 640
Học tốt nhé~
a) (378 + 459 + 162) - 359
= (378 + 162) + (459 - 359)
= 440 + 100 = 540
b) 54 + 1246 - 753 - 247
= (54 + 1246) - (753 + 247)
= 1300 - 1000 = 300
c) (647 + 835) + (645 + 833)
= 647 + 835 + 645 + 833
= (647 + 833) + (835 + 645)
= 1440 + 1440 = 2880