Question

1) 20,4 *6,5 + 3,8 * 18;e) 7,2*3,6 - 4,8*5,4.​

Answer 1

1) 132.6  + 68.4 = 201

2) 25.92 -25.92 = 0

Answer 2

Let's solve the given arithmetic expression step by step:

1. $20.4 \times 6.5 + 3.8 \times 18$

First, multiply $20.4$ by $6.5$:

$20.4 \times 6.5 = 132.6$

Next, multiply $3.8$ by $18$:

$3.8 \times 18 = 68.4$

Now, add the two results together:

$132.6 + 68.4 = 201$

So, $20.4 \times 6.5 + 3.8 \times 18 = 201$.

2. $7.2 \times 3.6 - 4.8 \times 5.4$

First, multiply $7.2$ by $3.6$:

$7.2 \times 3.6 = 25.92$

Next, multiply $4.8$ by $5.4$:

$4.8 \times 5.4 = 25.92$

Now, subtract the second result from the first:

$25.92 - 25.92 = 0$

So, $7.2 \times 3.6 - 4.8 \times 5.4 = 0$.

To summarize:

1. $20.4 \times 6.5 + 3.8 \times 18 = 201$
2. $7.2 \times 3.6 - 4.8 \times 5.4 = 0$