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Cau 1: luc 8h 1 nguoi di xe dap tu A-B, cach A 10 km. Biet rang nguoi do den B luc 10h 30phut. Tinh van toc cua nguoi di xe dap.Cau 2: Chu vi cua hinh chu nhat la 18cm. neu giam chieu dai di 20% va tang chieu rong 25% thi P khong thay doi. tinh S hinh chu nhat do.Cau 3: nguoi thu nhat di tu A-B van toc 30km/h. 20 phut sau, nguoi thu hai cung di tu A-B van toc 36km/h. Nguoi thu 2 den B sau nguoi thu nhat 5 phut. Hoi quang duong A-B dai bao nhieu?Cau 4: ti so cua 2 so la 7/12. neu them 10 don vi v...
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Cau 1: luc 8h 1 nguoi di xe dap tu A->B, cach A 10 km. Biet rang nguoi do den B luc 10h 30phut. Tinh van toc cua nguoi di xe dap.
Cau 2: Chu vi cua hinh chu nhat la 18cm. neu giam chieu dai di 20% va tang chieu rong 25% thi P khong thay doi. tinh S hinh chu nhat do.
Cau 3: nguoi thu nhat di tu A->B van toc 30km/h. 20 phut sau, nguoi thu hai cung di tu A->B van toc 36km/h. Nguoi thu 2 den B sau nguoi thu nhat 5 phut. Hoi quang duong A->B dai bao nhieu?
Cau 4: ti so cua 2 so la 7/12. neu them 10 don vi vao so thu 1 thi ti so cua 2 so la 3/4. Tinh tong 2 so.
mik danh bang may tinh nen ko viet duoc dau. sorry nha. cam on nhieu!!!
tong hai so la 7/15 neu them vao so thu nhat 1/3 thi tong hai so la bao nhieu
tim hai so biet so thu hai bang 3 lan so thu nhat cong them 5 don vi va ti so cua chung la 2/7
hai so co ti so bang 5/4. biet neu bot 15 o so thu nhat va them vao so thu 2 thi ta duoc hai so moi co ti so la 5/7. so be la
hai bao duong chua tong cong 52,2 kg,biet ti so phan tram so duong cua bao thu nhat va bao thu hai la 25% .hoi moi bao chua bao nhieu kg duong
Trung binh cong cua 3 so la 12.So thu nhat la 12,5.So thu hai kem so thu nhat la 0,2.Hoi so thu ba la bao nhieu
1.tim so bi chia trong phep chia cho 12 co thuong la 35 va so du la so le co 2chu so2.hieu cua so lon nhat co 4 chu so khac nhau va so nho nhat co 4 chu sola bao nhieu3.mot hinh chu nhat co chieu dai gap ruoi chieu rong. Neu moi chieu tang them 1m thi duoc hinh chu nhat moi co dien tich tang them 26m2. Tinh chu vi hinh chu nhat4.trung binh cong cua 2 phan so bang 5/12. Phan so thu nhat hon phan so thu hai 1/6. Tim phan so thu nhat5.tim y biet (5/7 - y) nhan 4/5 7/10 + 1/26.hieu 2 so 1/3 so be.To...
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1.tim so bi chia trong phep chia cho 12 co thuong la 35 va so du la so le co 2chu so
2.hieu cua so lon nhat co 4 chu so khac nhau va so nho nhat co 4 chu sola bao nhieu
3.mot hinh chu nhat co chieu dai gap ruoi chieu rong. Neu moi chieu tang them 1m thi duoc hinh chu nhat moi co dien tich tang them 26m2. Tinh chu vi hinh chu nhat
4.trung binh cong cua 2 phan so bang 5/12. Phan so thu nhat hon phan so thu hai 1/6. Tim phan so thu nhat
5.tim y biet (5/7 - y) nhan 4/5 =7/10 + 1/2
6.hieu 2 so =1/3 so be.Tong 2 so la 63. Tim so be
co 3 so, tong cua so thu nhat va so thu 2 la 2010, bt hieu cua tong 2 so do va so thu 3 la 2009. so thu 3 la bao nhieu?
Bai 1 : Tong cua hai so la 2000. Neu so hang thu nhat them 135 don vi va so hang thu hai bot 531 don vi thi duoc tong moi la bao nhieu?Bai 2 : Tim tong hai so biet rang neu so hang thu nhat bot di 246 don vi va so hang thu hai them 642 don vi thi duoc tong moi bang 2010.Bai 3 : Hieu cua hai so la 1000. Neu so lon them 235 don vi va so be bot 200 don vi thi duoc hieu moi la bao nhieu?Bai 4 : Hieu cua hai so bang 1234. Neu so lon bot 234 don vi va so be them 456 don vi thi duoc hieu moi la bao nh...
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Bai 1 : Tong cua hai so la 2000. Neu so hang thu nhat them 135 don vi va so hang thu hai bot 531 don vi thi duoc tong moi la bao nhieu?
Bai 2 : Tim tong hai so biet rang neu so hang thu nhat bot di 246 don vi va so hang thu hai them 642 don vi thi duoc tong moi bang 2010.
Bai 3 : Hieu cua hai so la 1000. Neu so lon them 235 don vi va so be bot 200 don vi thi duoc hieu moi la bao nhieu?
Bai 4 : Hieu cua hai so bang 1234. Neu so lon bot 234 don vi va so be them 456 don vi thi duoc hieu moi la bao nhieu?
Bai 5 ; Tim hieu cua hai so, biet rang so lon va so be cung bot di 100 don vi thi duoc hieu moi la 1000.