Question
Use mental math to solve the following problem 7000×20
Answers
GPT-4o mini
To solve \( 7000 \times 20 \) using mental math, you can break it down as follows:
First, you can calculate \( 7000 \times 10 \):
\[
7000 \times 10 = 70000
\]
Next, since \( 20 \) is \( 2 \times 10 \), you can double that result:
\[
70000 \times 2 = 140000
\]
Therefore, \( 7000 \times 20 = 140000 \).
First, you can calculate \( 7000 \times 10 \):
\[
7000 \times 10 = 70000
\]
Next, since \( 20 \) is \( 2 \times 10 \), you can double that result:
\[
70000 \times 2 = 140000
\]
Therefore, \( 7000 \times 20 = 140000 \).