1. 5 plants \eqalign{8 \times \dfrac{1}{4}&=2\\2+3&=5}
2. 5 bananas \eqalign{4 \times \dfrac{1}{2}&=2\\2+3&=5}
3. 3 trees \eqalign{6 \times \dfrac{1}{3}&=2\\2+1&=3}
4. 12 problems \eqalign{14 \times \dfrac{1}{7}&=2\\14-2&=12}
5. 6 surf boards\eqalign{10-1&=9\\9 \times \dfrac{1}{3}&=3\\9-3&=6}
6. 6 mangoes \eqalign{4 \times \dfrac{1}{2}&=2\\2+4&=6}
7. \12.33 \eqalign{37 \times \dfrac{1}{3}&=12.33} 8. \3.56 \eqalign{9.50 \times \dfrac{1}{2}&=4.75\\4.75 \times \dfrac{1}{4}&=1.19\\4.75-1.19&=3.56}
9. \3.33\eqalign{x \times \dfrac{3}{4}&=2.50\\\div\dfrac{3}{4}& \;\; \div \dfrac{3}{4}\\x&=3.33} 10. \10.50\eqalign{1-\dfrac{7}{8}&=\dfrac{1}{8}\\x \times \dfrac{1}{8}&=1.50\\\div\dfrac{1}{8}& \;\; \div \dfrac{1}{8}\\x&=12\\12-1.50&=10.50}
11. \dfrac{7}{15}\eqalign{\dfrac{1}{5}+\dfrac{3}{9}+c&=1\\\dfrac{8}{15}+c&=1\\-\dfrac{8}{15}&\;\;-\dfrac{8}{15}\\c&=\dfrac{7}{15}} 12.\dfrac{1}{6}\eqalign{1-\dfrac{4}{5}&=\dfrac{1}{5}\\\dfrac{1}{5}\times\dfrac{1}{6}&=\dfrac{1}{30}\\1-\dfrac{4}{5}-\dfrac{1}{30}&=\dfrac{1}{6}}