No 1
[tex] \frac{4}{7} \times \frac{2}{3} [/tex]
[tex] \frac{4 \times 2}{7 \times 3} [/tex]
[tex]\sf\blue{ \frac{8}{21}} [/tex]
_______________
No 2
[tex]2 \frac{1}{4} \times 1 \frac{2}{5} [/tex]
[tex] \frac{4 \times 2 + 1}{4} \times \frac{5 \times 1 + 2}{5} [/tex]
[tex] \frac{9}{4} \times \frac{7}{5} [/tex]
[tex] \frac{9 \times 7}{4 \times 5} [/tex]
[tex] \frac{63}{20} \to\sf\blue{3 \frac{3}{20} }[/tex]
______________
No 3
[tex]2 \times 1 \frac{2}{4} [/tex]
[tex] \frac{2}{1} \times \frac{4 \times 1 + 2}{4} [/tex]
[tex] \frac{2}{1} \times \frac{6}{4} [/tex]
[tex] \frac{2 \times 6}{1 \times 4} [/tex]
[tex] \frac{12}{4} \to\bf\blue{3}[/tex]
_______________
No 4
[tex]2,37 \times 1,2[/tex]
[tex] \frac{237}{100} \times \frac{12}{10} [/tex]
[tex] \frac{237 \times 12}{100 \times 10} [/tex]
[tex] \frac{2884}{1000} [/tex]
[tex]2884 \div 1000[/tex]
[tex]\bf\blue{2,884}[/tex]
_______________
[tex]0,7 \times 2,12[/tex]
[tex] \frac{7}{10} \times \frac{212}{100} [/tex]
[tex] \frac{7 \times 212}{10 \times 100} [/tex]
[tex] \frac{1484}{1000} [/tex]
[tex]1484 \div 1000[/tex]
[tex]\bf\blue{1,484}[/tex]
[tex]\tiny\blue☆[/tex]
[answer.2.content]
