Problem Overview:
The task involves solving subtraction problems involving decimals and using the results to color a design based on specific rules. The goal is to solve each problem, determine the digit in the
tenths place of the result, and use that information to color the corresponding shapes according to the instructions provided.
Instructions Recap:
1. Solve each subtraction problem.
2. If the number in the tenths place is
0, 1, 2, or 3, color the shape red.
3. If the number in the tenths place is
4, 5, 6, 7, 8, or 9, color the shape pink.
4. Finish the design by coloring the other spaces as desired.
Step-by-Step Solution:
#### Problem 1: $ 3.44 - 1.899 = $
- Align the numbers by their decimal points:
$$
\begin{array}{r}
3.440 \\
- 1.899 \\
\hline
\end{array}
$$
- Subtract starting from the rightmost digit:
- Thousandths place: $ 0 - 9 $ (borrow 1 from the hundredths place, making it $ 10 - 9 = 1 $).
- Hundredths place: $ 3 - 9 $ (borrow 1 from the tenths place, making it $ 13 - 9 = 4 $).
- Tenths place: $ 3 - 8 $ (borrow 1 from the units place, making it $ 13 - 8 = 5 $).
- Units place: $ 2 - 1 = 1 $.
- Result: $ 3.440 - 1.899 = 1.541 $.
- The digit in the tenths place is
5.
- Color the shape
pink.
#### Problem 2: $ 2.982 - 0.8 = $
- Align the numbers by their decimal points:
$$
\begin{array}{r}
2.982 \\
- 0.800 \\
\hline
\end{array}
$$
- Subtract starting from the rightmost digit:
- Thousandths place: $ 2 - 0 = 2 $.
- Hundredths place: $ 8 - 0 = 8 $.
- Tenths place: $ 9 - 8 = 1 $.
- Units place: $ 2 - 0 = 2 $.
- Result: $ 2.982 - 0.8 = 2.182 $.
- The digit in the tenths place is
1.
- Color the shape
red.
#### Problem 3: $ 5.13 - 4.799 = $
- Align the numbers by their decimal points:
$$
\begin{array}{r}
5.130 \\
- 4.799 \\
\hline
\end{array}
$$
- Subtract starting from the rightmost digit:
- Thousandths place: $ 0 - 9 $ (borrow 1 from the hundredths place, making it $ 10 - 9 = 1 $).
- Hundredths place: $ 2 - 9 $ (borrow 1 from the tenths place, making it $ 12 - 9 = 3 $).
- Tenths place: $ 0 - 7 $ (borrow 1 from the units place, making it $ 10 - 7 = 3 $).
- Units place: $ 4 - 4 = 0 $.
- Result: $ 5.13 - 4.799 = 0.331 $.
- The digit in the tenths place is
3.
- Color the shape
red.
Final Answer:
- For $ 3.44 - 1.899 $, the result is $ 1.541 $. Color the shape
pink.
- For $ 2.982 - 0.8 $, the result is $ 2.182 $. Color the shape
red.
- For $ 5.13 - 4.799 $, the result is $ 0.331 $. Color the shape
red.
$$
\boxed{\text{Pink, Red, Red}}
$$
Parent Tip: Review the logic above to help your child master the concept of addition and subtraction decimals worksheet free.