画像に写っている分数のかけ算の問題を解く。

1. 問題の内容

画像に写っている分数のかけ算の問題を解く。

2. 解き方の手順

問題番号順に解いていく。

(11) $8 \times \frac{5}{6} = \frac{8 \times 5}{6} = \frac{40}{6} = \frac{20}{3}$

(12) $5 \times \frac{2}{15} = \frac{5 \times 2}{15} = \frac{10}{15} = \frac{2}{3}$

(13) $12 \times \frac{5}{12} = \frac{12 \times 5}{12} = \frac{60}{12} = 5$

(14) $16 \times \frac{1}{8} = \frac{16 \times 1}{8} = \frac{16}{8} = 2$

(15) $6 \times \frac{7}{12} = \frac{6 \times 7}{12} = \frac{42}{12} = \frac{21}{6} = \frac{7}{2}$

(16) $3 \times \frac{3}{10} = \frac{3 \times 3}{10} = \frac{9}{10}$

(17) $3 \times \frac{1}{4} = \frac{3 \times 1}{4} = \frac{3}{4}$

(18) $15 \times \frac{17}{30} = \frac{15 \times 17}{30} = \frac{17}{2}$

(19) $12 \times \frac{9}{28} = \frac{12 \times 9}{28} = \frac{108}{28} = \frac{54}{14} = \frac{27}{7}$

(20) $7 \times \frac{10}{21} = \frac{7 \times 10}{21} = \frac{70}{21} = \frac{10}{3}$

(1) $13 \times \frac{6}{39} = \frac{13 \times 6}{39} = \frac{6}{3} = 2$

(2) $11 \times \frac{6}{22} = \frac{11 \times 6}{22} = \frac{6}{2} = 3$

(3) $5 \times \frac{4}{30} = \frac{5 \times 4}{30} = \frac{20}{30} = \frac{2}{3}$

(4) $6 \times \frac{2}{12} = \frac{6 \times 2}{12} = \frac{12}{12} = 1$

(5) $12 \times \frac{5}{8} = \frac{12 \times 5}{8} = \frac{60}{8} = \frac{30}{4} = \frac{15}{2}$

(6) $25 \times \frac{6}{35} = \frac{25 \times 6}{35} = \frac{5 \times 6}{7} = \frac{30}{7}$

(7) $11 \times \frac{6}{33} = \frac{11 \times 6}{33} = \frac{6}{3} = 2$

(8) $4 \times \frac{9}{24} = \frac{4 \times 9}{24} = \frac{36}{24} = \frac{18}{12} = \frac{9}{6} = \frac{3}{2}$

(9) $8 \times \frac{42}{56} = \frac{8 \times 42}{56} = \frac{336}{56} = \frac{168}{28} = \frac{84}{14} = 6$

(10) $24 \times \frac{32}{48} = \frac{24 \times 32}{48} = \frac{32}{2} = 16$

3. 最終的な答え

(11) $\frac{20}{3}$

(12) $\frac{2}{3}$

(13) $5$

(14) $2$

(15) $\frac{7}{2}$

(16) $\frac{9}{10}$

(17) $\frac{3}{4}$

(18) $\frac{17}{2}$

(19) $\frac{27}{7}$

(20) $\frac{10}{3}$

(1) $2$

(2) $3$

(3) $\frac{2}{3}$

(4) $1$

(5) $\frac{15}{2}$

(6) $\frac{30}{7}$

(7) $2$

(8) $\frac{3}{2}$

(9) $6$

(10) $16$