3 phút 40 giây=......giây

Bài 1: Đặt tính rồi tính: a) 21 phút 12 giây : 4 b) 4 phút 15 giây x 5 c) 11 giờ 27 phút : 3 d) 2 giờ 12 phút x 4 Bài 2: Tính: a) (3 phút 15 giây + 1 phút 20 giây) x 3 b) ( 9 giờ 40 phút - 1 giờ 24 phút) : 4 c) (2 phút 30 giây + 3 phút 21 giây) : 3 d) 1 giờ 15 phút x 2 + 9 giờ 20 phút : 4Bài 3: Một ô tô đi được quãng đường 120km trong 2 giờ. Tính vận tốc của ô tô đó. Bài 4: Một người thợ làm 2 sản phẩm hết 2 giờ 24 phút. Hỏi muốn làm xong 15 sản phẩm thì người đó phải làm trong thời gi...

Đọc tiếp

Bài 1: Đặt tính rồi tính:
a) 21 phút 12 giây : 4

b) 4 phút 15 giây x 5

c) 11 giờ 27 phút : 3

d) 2 giờ 12 phút x 4
Bài 2: Tính:
a) (3 phút 15 giây + 1 phút 20 giây) x 3

b) ( 9 giờ 40 phút - 1 giờ 24 phút) : 4

c) (2 phút 30 giây + 3 phút 21 giây) : 3

d) 1 giờ 15 phút x 2 + 9 giờ 20 phút : 4

Bài 3: Một ô tô đi được quãng đường 120km trong 2 giờ. Tính vận tốc của ô tô đó.

Bài 4: Một người thợ làm 2 sản phẩm hết 2 giờ 24 phút. Hỏi muốn làm xong 15 sản
phẩm thì người đó phải làm trong thời gian bao lâu?

Bài 5: Một xe máy đi từ 8 giờ 15 phút đến 10 giờ được 73,5km. Tính vận tốc của xe
máy đó với đơn vị đo là km/giờ.

Phan Đức Long

3 tháng 5 2016 lúc 14:37

220 giây

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Trần Quỳnh Mai

3 phút 40 giây = 220 giây

Dịch Dương Thiên Tỉ

3 tháng 5 2016 lúc 14:47

Huyền Nguyễn Khánh

3 tháng 5 2016 lúc 15:15

Ny Mìn Rất Đẹp Zai

3 tháng 5 2016 lúc 15:20

Trần Mai Phương Thảo

10 tháng 5 2020 lúc 11:27

Khách vãng lai đã xóa

Vi Quốc Tuấn

18 tháng 11 2025 lúc 17:40

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2 giờ 45 phút = 2, giờ	3 giờ 24 phút = 3, giờ 1 giờ 9 phút =............giờ
13 phút 49 giây= phút	25 phút 24 giây=..........phút 5 phút 18 giây =.........phút
1 giờ 40 phút= 1,24 giờ	2 giờ 20 phút=............giờ 3 phút 20 giây=............phút

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