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Shreya uses $a \times (b + c) = a \times b + a \times c$ to work out $8 \times 105$ in her head. What answer does she get?

Class 6Rules and Formulas with VariablesAlgebra

A813
B840
C805
D8400

Step-by-Step Solution

8 \times 105 = 8 \times (100 + 5) = 8 \times 100 + 8 \times 5 = 800 + 40 = 840

. (805 forgets to multiply the 5 by 8.)

Answer: B) 840

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