3. Вычисли: 157 × 3 237 × 2 96 × 4 59 × 9 198 × 4

Решение:

Выполним умножение столбиком:

1) 157 × 3

\( \begin{array}{c} \phantom{\times}157 \\ \times \phantom{\times \times}3 \\[-3pt]
ule{5ex}{0.4pt} \\[-1pt] \phantom{\times}471 \end{array} \)

2) 237 × 2

\( \begin{array}{c} \phantom{\times}237 \\ \times \phantom{\times \times}2 \\[-3pt]
ule{5ex}{0.4pt} \\[-1pt] \phantom{\times}474 \end{array} \)

3) 96 × 4

\( \begin{array}{c} \phantom{\times \times}96 \\ \times \phantom{\times \times}4 \\[-3pt]
ule{5ex}{0.4pt} \\[-1pt] \phantom{\times}384 \end{array} \)

4) 59 × 9

\( \begin{array}{c} \phantom{\times \times}59 \\ \times \phantom{\times \times}9 \\[-3pt]
ule{5ex}{0.4pt} \\[-1pt] \phantom{\times}531 \end{array} \)

5) 198 × 4

\( \begin{array}{c} \phantom{\times}198 \\ \times \phantom{\times \times}4 \\[-3pt]
ule{5ex}{0.4pt} \\[-1pt] \phantom{\times}792 \end{array} \)

Ответ: 471, 474, 384, 531, 792.