(5.21 × 6.32) - 2.9272 =
30
This question involves performing a multiplication of two decimal numbers and then subtracting another decimal number from the result. We will solve this step-by-step.
First, we need to calculate the product of 5.21 and 6.32.
Using LaTeX for the multiplication:
$$ 5.21 \times 6.32 $$
To multiply these numbers, we can ignore the decimal points initially and multiply 521 by 632:
$$ 521 \times 632 = 329272 $$
Now, we need to place the decimal point. Since 5.21 has two decimal places and 6.32 has two decimal places, the result must have a total of four decimal places (2 + 2 = 4).
So, the result of the multiplication is:
$$ 5.21 \times 6.32 = 32.9272 $$
Next, we subtract 2.9272 from the result obtained in Step 1.
Using LaTeX for the subtraction:
$$ 32.9272 - 2.9272 $$
Performing the subtraction:
$$ \begin{array}{@{}c@{\,}c@{}c@{}c@{}c@{}c@{}c} & 3 & 2 & . & 9 & 2 & 7 & 2 \\ - & & 2 & . & 9 & 2 & 7 & 2 \\ \hline & 3 & 0 & . & 0 & 0 & 0 & 0 \\ \end{array} $$
The result of the subtraction is 30.
The calculation (5.21 × 6.32) - 2.9272 equals 30.
Comparing this result with the given options:
The calculated value matches Option 2.
If 2945 ÷ 19 – 11 × 5 = 29 + a, find the value of a.
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What will come in the place of question mark (?) in the given expression?
(420 ÷ 12 × 35 + 452- 152) = ?2
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