67.35
____________________
_chúc bạn học tốt_
19.25 + 9.95 + 38.15 = (19.25 + 9.95) + 38.15
= 29.2 + 38.15
= 67.35
Tinh bang cach hop li:
18.17-3.6.7
3^3.(-17-5)-17.(33-5)
19.25+9.25+19.3
(gợi ý: 95=19.5)
Tinh tong sau bang cach hop ly:
B = 5/2.1 + 4/1.11 + 3/11.2 + 1/2.15 + 13/15.4
Ghi ca cach lam nhe ! Ai nhanh nhat, dung nhat tick lun !!!!!!
Mot manh vuon HCN co chieu dai la 120m,chieu rong la 80m.Nguoi ta muon chia manh vuon nay thanh nhung hinh vuong nho co dien tich bang nhau,co may cach chia manh vuon tren biet do dai moi canh cua hinh vuong la so tu nhien
Cach chia nhu the nao thi dien tich hinh vuong lon nhat.Tim dien tich lon nhat do
Tinh bang cach hop li
-1911-(1234-1911)
Tinh bang cach hop li
5956x500+458x500+3568x500=
tinh bang cach hop li
-1+6+(-11)+16+...+996+(-1001)
Tinh bang cach hop li
7/13×5/14×39/15
tinh gia tri bieu thuc bang cach hop li nhat b=1.3.5...............2011.2013/1008.1009..............2014
1. Cho A = { 1; 2; 3; 4; 5; 6; 7; 8; 9 }. Hay viet tap hop A bang cach chi ra tinh chat dac trung bang 3 cach
2. Tim 3 so tu nhien lien tiep sao cho tong 3 so do la 36
3. Viet tap hop A cac so tu nhien co 3 chu so sao cho tong cac chu so cua moi so la 5
giup minh nhe minh se tickcho ^^ thank you very much !!!
