Bai 1 :
Bai giai
9 ngan nhu the xep duoc so quyen sach la:
2975 : 7 . 9 = 3825 ( quyen )
dap so : 3825 quyen
bai 2 :
Minh ko biet lam bai nay , bo qua nha
bai 3 :
bai giai
sau khi bieu ba va de danh cho bo thi me con so qua cam la :
12 - 3 - 1 = 8 ( qua )
moi anh em duoc so qua cam la :
8 : 2 = 4 ( qua )
dap so : 4 qua
bai 4 :
bai giai
xe thu hai cho duoc so bao gao la :
36 . 3 = 108 ( bao )
ca hai xe cho duoc so bao gao la:
36 + 108 = 144 ( bao )
dap so : 144 bao gao
bai 5 :
bai giai
theo dau bai ta co : 36 = 6 . 6 nen canh cua hinh vuong la : 6 cm
chu vi cua hinh vuong la :
6 . 4 = 24 ( cm )
dap so : 24 cm
bai 6
bai giai
so can tim la :
20 + 4 - 2 = 22
vay so can tim la : 22
bai 7
bai giai
ngay thu hai ban duoc so kg bap la
12560 . \(\dfrac{1}{2}\) = 12560 . 1 : 2 = 6280 ( kg )
ca hai ngay ban duoc so kg bap la
12560 + 6280 = 18840 ( kg )
dap so : 18840 kg bap
bai 8
bai giai
63 chiec ghe nhu the xep duoc so hang la
63 : ( 45 : 5 ) = 7 ( hang )
dap so 7 hang
cau 1
neu dau bai la 3 dm thi khong co dap an dung ban oi
con neu dau bai la 3 cm thi dap an la C 9 cm vuong
cau 2
dap an dung C : 202 cm
cau 3
dap an dung : C : 15 000 d
co may bai mk lam gop , neu ban khong thich lam gop thi ban co the lam tach rieng ra tung y
Dap an cua mk cau nao cung dung . mk dam bao 10000000000000000000000000000000000000000000000000000000% luon