Question

10. Find the value of: (20.5 x 40 ) + (10.25 + 18.50)
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Answer 1

We need to recall the following PEMDAS rule.

The order of mathematical operations is: Parenthesis, Exponents, Multiplication and Division, Addition and Subtraction

Given:

$(20.5\times40)+(10.25+18.50)$

$=820+(10.25+18.50)$

$=820+28.75$

$=848.75$

Answer 2

Concept

To add decimals, arrange the numbers in a column and align the decimal points. Put a decimal point exactly below the decimal points in the addends to maintain the decimal point in your sum. Align the decimal point in the sum with the decimal point in the addends; if necessary, add a zero.

Given

$(20.5\times40)+(10.25+18.50)$

Find

We are asked to find the value of the given

$(20.5\times40)+(10.25+18.50)$

Solution

By considering the given values

$(20.5\times40)+(10.25+18.50)\\820+10.25+18.50\\848.75$

Hence the value of

$(20.5\times40)+(10.25+18.50)$  

is $848.75$