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Question

(5.21 × 6.32) - 2.9272 =

The correct answer is

30

Solving the Math Calculation: (5.21 × 6.32) - 2.9272

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.

Step 1: Multiply the Decimal Numbers

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:

$$ 5.21 \times 6.32 = 32.9272 $$

Step 2: Subtract the Second Decimal Number

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.

Conclusion

The calculation (5.21 × 6.32) - 2.9272 equals 30.

Comparing this result with the given options:

  • Option 1: 32
  • Option 2: 30
  • Option 3: 34
  • Option 4: 36

The calculated value matches Option 2.

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Important Questions from Bodmas Rule

  1. If 2945 ÷ 19 – 11 × 5 = 29 + a, find the value of a.

  2. DIRECTIONS: What should come in place of the question mark (?) in the following question?

    3800 - 22 × 1968 ÷ 48 = ? × 7

  3. Solve: {7.88 × 2 + 2.4 × 5 - 242.4 ÷ 4 + [9.2 × 4 - 2.46 of 3 + (36.3 ÷ 3 - 1.42 × 2)]} 

  4. What will come in the place of question mark (?) in the given expression?

    (420 ÷ 12 × 35 + 452- 152) = ?2

  5. Evaluate: (13 × 8 - √81 × 6 + 1 ) ÷ (√49 + 72 - 18 × 2 + 19)

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