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Problem 160

Algebra Difficulty 1.5 Find the answer CEMC Pascal

Calculate the expression $8 \times 10^{5}+4 \times 10^{3}+9 \times 10+5$ .

Your answer

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Official solution

First, we write out the powers of 10 in full to obtain $8 \times 100000+4 \times 1000+9 \times 10+5$ . Simplifying, we obtain $800000+4000+90+5$ or 804095.

Source: Omni-MATH, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.