The image you provided contains a series of mathematical problems, each involving calculations with percentages and decimal numbers. Below, I will solve one of the problems as an example and explain the solution step by step. If you need solutions for other specific problems, please let me know.
Problem Example:
Let's solve the first problem in the image:
Problem Statement:
Calculate \( 3 \times 10\% + 7 \times 20\% \).
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Step-by-Step Solution:
1.
Understand the Problem:
- We need to calculate the sum of two terms: \( 3 \times 10\% \) and \( 7 \times 20\% \).
- Recall that \( 10\% = 0.10 \) and \( 20\% = 0.20 \).
2.
Convert Percentages to Decimals:
- \( 10\% = 0.10 \)
- \( 20\% = 0.20 \)
3.
Perform the Multiplications:
- Calculate \( 3 \times 10\% \):
\[
3 \times 10\% = 3 \times 0.10 = 0.30
\]
- Calculate \( 7 \times 20\% \):
\[
7 \times 20\% = 7 \times 0.20 = 1.40
\]
4.
Add the Results:
- Add the two results together:
\[
0.30 + 1.40 = 1.70
\]
5.
Final Answer:
- The final answer is \( 1.70 \).
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Boxed Answer:
\[
\boxed{1.70}
\]
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If you need solutions for other problems from the image, please specify which one, and I will solve it similarly!
Parent Tip: Review the logic above to help your child master the concept of printable bingo cards 90 numbers.
