a, 765 + 4327 +1235
= 4327 + ( 765 + 1235 )
= 4327 + 2000 = 6327
b , 291 + 563 + 309 + 137
= ( 291 + 309 ) + ( 563 + 137 )
= 600 + 700 = 1300
a, 765 + 4327 +1235
= 4327 + ( 765 + 1235 )
= 4327 + 2000 = 6327
b , 291 + 563 + 309 + 137
= ( 291 + 309 ) + ( 563 + 137 )
= 600 + 700 = 1300
tinh bang cach thuan tien nhat
28 nhan 4720 cong 71 nhan 4720 cong 4720
cam on
tinh bang cach thuan tien nhat
246 nhan 62 cong 246 nhan 38
tinh bang cach thuan tien
98 nhan 2012 cong 2012 cong 2012
1 , tinh bang cach tien nhat
[500 cong 115 ] nhan 55 cong[ 600 cong 15 ] nhan 15 cong [ 700 - 85] nhan 85 cong [ 900 -285 ] nhan 45
giai tung buoc cho minh nha
tien cong mot ngay cua nguoi tho ca la 95.000dong va tien cong cua nguoi tho phu la 60.000dong. neu moi nguoi lam 4 ngay cong cua nguoi tho ca nhieu hon so tien cong cua nguoi tho phu la bao nhieu?[ tinh bang hai cach ]
tinh bang cach thuan tien nhat ?
19/15 + 31/23 - 4/15 - 8/23 =.............
va bai , Mgot doi cong nhan sua 1 quang duong Ngay thu 1 sua dc 3/8 quang duong ngay thu 2 sua dc 1/3 quang duong.Hoi doi cong nhan can phai sua bao nhieu phan quang duong nua
ai giup minh tra loi thi minh se kb
Tien cong 1 ngay cua nguoi tho ca la 95000 dong va cua nguoi tho phu la 60000 dong . Neu moi nguoi lam 4 ngay thi tien cong cua nguoi tho ca nhieu hon so tien cong cua nguoi tho phu la bao nhieu tien ? {GIAI BANG 2 CACH }
a, tim so trung binh cong cua cac so tron chuc co 2 chu so
b, tinh = cach thuan tien nhat
a, 312 * 17 + 12 * 312 + 312
b, ( 532 * 7 - 266 * 14 ) * ( 532 * 7 + 266 )
c, ( 145 * 99 + 145 ) - ( 143 * 101 - 143 )
1,hieu cua 2 so la 13/18 . Neu them vao so tru 1/6 thi hieu 2 so la ?
2, tinh = cach thuan tien nhat :
19/15 + 31/23 - 4/15 - 8/23
3, 1 doi cong nhan sua 1 quang duong . Ngay thu nhat doi sua duoc 3/8 quang duong . Hoi doi cong nhan can phai sua ? phan quang duong ?
Ai giup mik dau tien voi tat ca cac bai toan tren thi se duoc chon va ket bn