ISEE Word Problems Question 155: Answer and Explanation

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Question: 155

2. What is the value of the numerical expression 5.3 × 10⁶ + 6.2 × 10⁴?

A. 6.152 × 10⁴
B. 5.92 × 10⁵
C. 5.362 × 10⁶
D. 1.25 × 10¹⁰

Correct Answer: C

Explanation:

The answer is C

Convert each term to a decimal before adding them: 3 × 10⁶ = 5,300,000 and 6.2 × 10⁴ = 62,000. Stack them by their digits correctly to get the sum of 5,362,000, which is 5.362 × 10⁶.

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