Solve the following multiplication and addition problems, filling in the blanks with the correct digits.

Решение:

Задание 1:

\( \begin{array}{c} \phantom{\times 9} 000 \\ + \; 600 \\
ule{4mm}{0.4pt} \\ 600 \end{array} \)

Задание 2:

\( \begin{array}{c} \phantom{\times 9} 009 \\ \times \; 07 \\
ule{4mm}{0.4pt} \\ 6000 \end{array} \)

Задание 3:

\( \begin{array}{c} \phantom{\times 9} 000 \\ + \; 000 \\
ule{4mm}{0.4pt} \\ 000 \end{array} \)

Задание 4:

\( \begin{array}{c} \phantom{\times 9} 000 \\ \times \; 00 \\
ule{4mm}{0.4pt} \\ 0000 \end{array} \)