Question

You need to make a cash memo for the things you bought.
Before adding, first guess how much money will be needed. Then find the total and check your guess.
Monu prepared the following cash memos:
Check the cash memos and correct them if you find a mistake.



• Add the following:
(a) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 12.50& \\ +\mathrm{Rs}& 13.00& \end{array} \\ \overline{\underline{}} \end{gathered}$$ (b) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 55.50& \\ +\mathrm{Rs}& 14.00& \end{array} \\ \overline{\underline{}} \end{gathered}$$ (c) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 30.00& \\ +\mathrm{Rs}& 31.50& \end{array} \\ \overline{\underline{}} \end{gathered}$$

• Subtract the following:
(a) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 25.50& \\ -\mathrm{Rs}& 11.50& \end{array} \\ \overline{\underline{}} \end{gathered}$$ (b) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 103.50& \\ +\mathrm{Rs}& 62.00& \end{array} \\ \overline{\underline{}} \end{gathered}$$ (c) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 19.50& \\ +\mathrm{Rs}& 7.00& \end{array} \\ \overline{\underline{}} \end{gathered}$$

Answer 1

As per my guess, the total amount of the cash memo would be around Rs 70.


Total amount of cash memo= Rs 67.50, and our guess was of almost the same amount i.e. Rs 70.


The corrections in the cash memo, prepared by Monu is shown below.



Add:

(a) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 12.50& \\ +\mathrm{Rs}& 13.00& \end{array} \\ \overline{\underline{\mathrm{Rs}25.50}} \end{gathered}$$ (b) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 55.50& \\ +\mathrm{Rs}& 14.00& \end{array} \\ \overline{\underline{\mathrm{Rs}69.50}} \end{gathered}$$ (c) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 30.00& \\ +\mathrm{Rs}& 31.50& \end{array} \\ \overline{\underline{\mathrm{Rs}61.50}} \end{gathered}$$

Subtract:

(a) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 25.50& \\ -\mathrm{Rs}& 11.50& \end{array} \\ \overline{\underline{\mathrm{Rs}14.00}} \end{gathered}$$ (b) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 103.50& \\ -\mathrm{Rs}& 62.00& \end{array} \\ \overline{\underline{\mathrm{Rs}41.50}} \end{gathered}$$ (c) $$\begin{gathered} \begin{array}{ccc}\mathrm{Rs}& 19.50& \\ -\mathrm{Rs}& 7.00& \end{array} \\ \overline{\underline{\mathrm{Rs}12.50}} \end{gathered}$$