問題
次の$\square$に当てはまる数を求めなさい.
解説
- $(1)$ $2022\div2\div3=\square$
- $2022\div6=$$337$
- $(2)$ $25.3\times63+25.3\times37=\square$
- $25.3\times(63+37)=$$2530$
- $(3)$ $3\dfrac{3}{4}\div\bigg(1\dfrac{1}{5}-1\dfrac{1}{8}\bigg)=\square$
- $\dfrac{15}{4}\div\dfrac{48-45}{40}$
$=\dfrac{15}{4}\times\dfrac{40}{3}$
$=$$50$
- $\dfrac{15}{4}\div\dfrac{48-45}{40}$
- $(4)$ $3-(1-0.25)\times\dfrac{5}{6}=\square$
- $3-\dfrac{3}{4}\times\dfrac{5}{6}$
$=3-\dfrac{5}{8}$
$=$$2\dfrac{3}{8}$
- $3-\dfrac{3}{4}\times\dfrac{5}{6}$
- $(5)$ $(48-\square)\times5-12\times3=24$
- $(48-\square)\times5=24+36$
$48-\square=60\div5$
$\square=$$36$
- $(48-\square)\times5=24+36$
- $(6)$ $5.3\div1.3$の商を四捨五入して小数第2位までの概数で求めると, $\square$です.
- $5.3\div1.3=4.076\cdots$より$\square=$$4.08$