Sách bài tập Tiếng Anh lớp 4 trang 43
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1. Tính nhẩm: a)
b)
c)
2. Tính: a) \(\eqalign{ & 63 \times 100:10 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \) b) \(\eqalign{ & 960 \times 1000:100 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \) c) \(\eqalign{ & 79 \times 100:10 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \) d) \(\eqalign{ & 90000:1000 \times 10 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \) 3. Viết số thích hợp vào chỗ chấm:
Bài giải: 1. a)
b)
c)
2. a) \(\eqalign{ & 63 \times 100:10 = 6300:10 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 630 \cr} \) b) \(\eqalign{ & 960 \times 1000:100 = 960000:100 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 9600 \cr} \) c) \(\eqalign{ & 79 \times 100:10 = 7900:10 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 790 \cr} \) d) \(\eqalign{ & 90000:1000 \times 10 = {\mkern 1mu} {\mkern 1mu} 90 \times 10 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 900 \cr} \) 3.
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