Solve 90div20

$$90 \div 20$$

Evaluate

$$\frac{9}{2}=4.5$$

Steps For Long Division Method

Use the 1^{st} digit 9 from dividend 90

$$\begin{array}{l}\phantom{20)}\phantom{1}\\20\overline{)90}\\\end{array}$$

Since 9 is less than 20, use the next digit 0 from dividend 90 and add 0 to the quotient

$$\begin{array}{l}\phantom{20)}0\phantom{2}\\20\overline{)90}\\\end{array}$$

Use the 2^{nd} digit 0 from dividend 90

$$\begin{array}{l}\phantom{20)}0\phantom{3}\\20\overline{)90}\\\end{array}$$

Find closest multiple of 20 to 90. We see that 4 \times 20 = 80 is the nearest. Now subtract 80 from 90 to get reminder 10. Add 4 to quotient.

$$\begin{array}{l}\phantom{20)}04\phantom{4}\\20\overline{)90}\\\phantom{20)}\underline{\phantom{}80\phantom{}}\\\phantom{20)}10\\\end{array}$$

Since 10 is less than 20, stop the division. The reminder is 10. The topmost line 04 is the quotient. Remove all zeros at the start of the quotient to get the actual quotient 4.

$$\text{Quotient: }4 \text{Reminder: }10$$

Factor

$$\frac{3 ^ {2}}{2} = 4\frac{1}{2} = 4.5$$