Question

find the product
1.
\

$$\begin{array}{r} 2,588 \\\\ \\times \\ \\ \\ \\ 7 \\\\ \\hline \\end{array}$$

2.
\

$$\begin{array}{r} 3,558 \\\\ \\times \\ \\ \\ \\ 6 \\\\ \\hline \\end{array}$$

3.
\

$$\begin{array}{r} 5,453 \\\\ \\times \\ \\ \\ \\ 7 \\\\ \\hline \\end{array}$$

4.
\

$$\begin{array}{r} 3,237 \\\\ \\times \\ \\ \\ \\ 7 \\\\ \\hline \\end{array}$$

5.
\

$$\begin{array}{r} 1,343 \\\\ \\times \\ \\ \\ \\ 5 \\\\ \\hline \\end{array}$$

6.
\

$$\begin{array}{r} 5,647 \\\\ \\times \\ \\ \\ \\ 7 \\\\ \\hline \\end{array}$$

7.
\

$$\begin{array}{r} 1,199 \\\\ \\times \\ \\ \\ \\ 2 \\\\ \\hline \\end{array}$$

8.
\

$$\begin{array}{r} 7,675 \\\\ \\times \\ \\ \\ \\ 2 \\\\ \\hline \\end{array}$$

9.
\

$$\begin{array}{r} 4,109 \\\\ \\times \\ \\ \\ \\ 7 \\\\ \\hline \\end{array}$$

10.
\

$$\begin{array}{r} 9,479 \\\\ \\times \\ \\ \\ \\ 1 \\\\ \\hline \\end{array}$$

11.
\

$$\begin{array}{r} 8,460 \\\\ \\times \\ \\ \\ \\ 4 \\\\ \\hline \\end{array}$$

12.
\

$$\begin{array}{r} 1,201 \\\\ \\times \\ \\ \\ \\ 5 \\\\ \\hline \\end{array}$$

13.
\

$$\begin{array}{r} 4,783 \\\\ \\times \\ \\ \\ \\ 7 \\\\ \\hline \\end{array}$$

14.
\

$$\begin{array}{r} 7,195 \\\\ \\times \\ \\ \\ \\ 4 \\\\ \\hline \\end{array}$$

15.
\

$$\begin{array}{r} 3,310 \\\\ \\times \\ \\ \\ \\ 9 \\\\ \\hline \\end{array}$$

Explanation:

1.

Step1: Multiply 2588 by 7

$2588\times7 = (2000 + 500 + 80 + 8)\times7 = 2000\times7 + 500\times7 + 80\times7 + 8\times7 = 14000 + 3500 + 560 + 56$

Step2: Calculate the sum

$14000 + 3500 = 17500; 17500 + 560 = 18060; 18060 + 56 = 18116$

Step1: Any number multiplied by 0 is 0

$3558\times0 = 0$

Step1: Multiply 5453 by 7

$5453\times7 = (5000 + 400 + 50 + 3)\times7 = 5000\times7 + 400\times7 + 50\times7 + 3\times7 = 35000 + 2800 + 350 + 21$

Step2: Calculate the sum

$35000 + 2800 = 37800; 37800 + 350 = 38150; 38150 + 21 = 38171$

Answer:

18116

2.