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natali 33 [55]
3 years ago
13

Elena divided a decimal by a whole number. 84.36 ÷ 12 = ? Part A: Explain each step needed to divide 84.3y by 12. Part B: What i

s the correct qoutient?
Mathematics
1 answer:
Iteru [2.4K]3 years ago
7 0

Answer:

Part A. \frac{84.3y}{12} = 7 +\frac{0.1\cdot y}{4}

Part B. The correct quotient is (3 × 4)

Step-by-step explanation:

Part A.

To divide 84.36 by 12 we look for the Highest Common Factor of the whole number and the decimal portions of the numerator and the denominator individually as follows;

\frac{84.36}{12} = \frac{84+0.3636}{12}  =  \frac{2 \times 2 \times 3  \times 7+0.01\times 12\times 3}{12} =  \frac{12  \times 7+0.03\times 12}{12}

Therefore, dividing 84.36 by 12 gives \frac{12  \times 7+0.03\times 12}{12} = 7+0.03 = 7.03

When dividing 84.3·y by 12, therefore, we have;

\frac{12  \times 7+0.3\times y}{12} = 7 +\frac{0.1\cdot y}{4}

Part B.

The correct quotient should have factors of the numerator

Therefore the divisor 12 should be represented as follows

\frac{12  \times 7+0.3\times y}{12} =\frac{12  \times 7+0.3\times y}{3 \times 4}

The correct quotient therefore = (3 × 4)

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