Hướng dẫn giải bài tập SGK Toán lớp 5 trang 163, 164: Ôn tập phép chia

Thứ năm - 11/01/2018 08:03
Hướng dẫn giải bài tập SGK Toán lớp 5 trang 163, 164: Ôn tập phép chia

Hướng dẫn giải bài Ôn tập về phép chia – SGK toán 5 (bài 1, 2, 3, 4 trang 163, 164/SGK Toán 5)

Câu 1: Tính rồi thử lại (theo mẫu):

a) 8192 : 32

15335 : 42

b) 75,95 : 3,5

97,65 : 21,7 (thương là số thập phân)

Chú ý: Phép chia hết: a: b = c, ta có a = c x b (b khác 0)

Phép chia có dư: a : b = c (dư r), ta có a = c x b + r (0 < r < b).

Câu 2: Tính

Câu 3: Tính nhẩm

a) 25 : 0,1                   48 : 0,01                       95 : 0,1

25 x 10                       48 x 100                      72 : 0,01

b) 11 : 0,25                  32 : 0,5                        75 : 0,5

11 x 4                          32 x 2                          125 : 0,25

Câu 4: Tính bằng hai cách

HƯỚNG DẪN GIẢI

Câu 1:

Câu 2: Tính

Câu 3: Tính nhẩm

Câu 4: Tính bằng hai cách

 

 

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