ISEE Mathematics Achievement Question 259: Answer and Explanation

Home > ISEE Test > ISEE Mathematics Achievement Practice Tests

Test Information

Use your browser's back button to return to your test results.
Do more ISEE Mathematics Achievement Practice Tests.

Question: 259

5. 2³ × 2³ × 2³ =

A. 2⁶
B. 2⁹
C. 2²⁷
D. 8⁹

Correct Answer: B

Explanation:

B Remember, with exponents, you can write it out! 2³ = 2 × 2 × 2 and 2² = 2 × 2, so you have (2 × 2 × 2) × (2 × 2 × 2) × (2 × 2). Count up the number of 2s that you have, which is 8, and make that number the new exponent: 2⁸. The correct choice is (B). Alternatively, you can use MADSPM: when multiplying the same base, add the exponents. Simply add 3 + 3 + 2 = 8. The answer will be 2⁸.

Previous Next