Các câu hỏi tương tự
TIM SO LON NHAT CO 4 CHU SO KHAC NHAU CHIA HET CHO 2 5 9 TRINH BAY CACH LAM HO MINH NHE
bai 4: tinh bang cach thuan tien nhat: a, 5/9*5/2+4/9*5/2 , b, 12*3/4-3/4*12/7 lam kieu gi
giup minh voi
1+2-3+4-5+6-7+8-9+10...19+20 tinh nhanh bang bao nhieu giai thich cach lam
Tính bằng 2 cách:
A).(6/11+5/11)x3/7
B).3/5+7/9-3/5x2/9
C).(6/7+4/7):2/5
D).8/15:2/11+7/15:2/11
Lam day du 2 cach moi cau tick 3!!day du nhe.le len
1+2+3+4++5+6+7+8+9+10+11+12+13+14++15+16+17+18+19+20
Hoi tong tren bang bao nhieu (tinh nhanh va giai thich cach lam)
bai4: mot nguoi dem ban 1200kg gao. Lan thu nhat nguoi do ban 2/5 so gao, lan thu hai ban 3/8 so gao. Hoi nguoi do con bao nhieu yen gao ? lam theo cach 2 nhe
giup minh voi
minh tich 6 ban thoi nha
May ong ba tinh cho con bai nay bang 2 cach day gu ko thieu cao nao con tick 3 hieu chua
A).3/5x7/9-3/5x2/9
B).(6/7-4/7):2/5
C).8/15:2/11+7/15:2/11
Mog may nguoi thieu nag dug vao.lam day du 2 cach 3 cau ticl 3.le dum
Tính roi rut gon:
A).2/7:4/5 b).3/8:9/4 c).8/21:4/7
D).5/8:15/8
Ai lam day du phep tinh va cach rug gon mik tick 2 cai lan
tinh bang cach thuan tien nhat
1+2+3+4+5+6+7+8+9:9 =