Bài tập 2 trang 61 VBT Toán 4 tập 1

3 BT SGK

Tính:

\(\eqalign{a) & 63 \times 100:10 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \)

\(\eqalign{b) & 960 \times 1000:100 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \)

\(\eqalign{c) & 79 \times 100:10 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr} \)

\(\eqalign{d) & 90000:1000 \times 10 = \ldots \ldots \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \ldots \ldots \cr}\)

Hướng dẫn giải chi tiết

\(\eqalign{a) & 63 \times 100:10 = 6300:10 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 630 \cr} \)

\(\eqalign{b) & 960 \times 1000:100 = 960000:100 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 9600 \cr} \)

\(\eqalign{c) & 79 \times 100:10 = 7900:10 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 790 \cr}\)

\(\eqalign{d) & 90000:1000 \times 10 = {\mkern 1mu} {\mkern 1mu} 90 \times 10 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 900 \cr} \)

-- Mod Toán lớp 4 HỌC247

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