It seems you've uploaded an image containing a worksheet for practicing addition and subtraction. The task involves solving the problems in each section (1), (2), (3), etc., and filling in the answers. Below, I will solve the problems step by step and explain the solution process.
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Worksheet: Addition and Subtraction
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Section 1
1.
(1) 0.9 + 2.1 = ?
- Add the numbers: \( 0.9 + 2.1 = 3.0 \)
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Answer: \( 3.0 \)
2.
(2) 3.4 + 5.6 = ?
- Add the numbers: \( 3.4 + 5.6 = 9.0 \)
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Answer: \( 9.0 \)
3.
(3) 5.8 + 3.2 = ?
- Add the numbers: \( 5.8 + 3.2 = 9.0 \)
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Answer: \( 9.0 \)
4.
(4) 9.2 + 7.8 = ?
- Add the numbers: \( 9.2 + 7.8 = 17.0 \)
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Answer: \( 17.0 \)
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Section 2
1.
(5) 3.3 - 4.8 = ?
- Subtract the numbers: \( 3.3 - 4.8 = -1.5 \)
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Answer: \( -1.5 \)
2.
(6) 6.5 - 8.0 = ?
- Subtract the numbers: \( 6.5 - 8.0 = -1.5 \)
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Answer: \( -1.5 \)
3.
(7) 9.5 - 5.5 = ?
- Subtract the numbers: \( 9.5 - 5.5 = 4.0 \)
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Answer: \( 4.0 \)
4.
(8) 1.6 - 4.5 = ?
- Subtract the numbers: \( 1.6 - 4.5 = -2.9 \)
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Answer: \( -2.9 \)
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Section 3
1.
(9) 7.8 + 1.0 = ?
- Add the numbers: \( 7.8 + 1.0 = 8.8 \)
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Answer: \( 8.8 \)
2.
(10) 1.9 + 1.1 = ?
- Add the numbers: \( 1.9 + 1.1 = 3.0 \)
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Answer: \( 3.0 \)
3.
(11) 3.5 + 2.3 = ?
- Add the numbers: \( 3.5 + 2.3 = 5.8 \)
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Answer: \( 5.8 \)
4.
(12) 8.3 + 2.2 = ?
- Add the numbers: \( 8.3 + 2.2 = 10.5 \)
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Answer: \( 10.5 \)
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Section 4
1.
(13) 5.9 + 1.4 = ?
- Add the numbers: \( 5.9 + 1.4 = 7.3 \)
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Answer: \( 7.3 \)
2.
(14) 2.5 + 3.2 = ?
- Add the numbers: \( 2.5 + 3.2 = 5.7 \)
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Answer: \( 5.7 \)
3.
(15) 4.0 + 6.0 = ?
- Add the numbers: \( 4.0 + 6.0 = 10.0 \)
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Answer: \( 10.0 \)
4.
(16) 1.0 + 6.1 = ?
- Add the numbers: \( 1.0 + 6.1 = 7.1 \)
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Answer: \( 7.1 \)
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Section 5
1.
(17) 5.4 + 1.8 = ?
- Add the numbers: \( 5.4 + 1.8 = 7.2 \)
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Answer: \( 7.2 \)
2.
(18) 7.0 + 9.0 = ?
- Add the numbers: \( 7.0 + 9.0 = 16.0 \)
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Answer: \( 16.0 \)
3.
(19) 9.7 + 0.3 = ?
- Add the numbers: \( 9.7 + 0.3 = 10.0 \)
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Answer: \( 10.0 \)
4.
(20) 2.3 + 7.6 = ?
- Add the numbers: \( 2.3 + 7.6 = 9.9 \)
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Answer: \( 9.9 \)
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Final Answers
Here are all the answers organized by section:
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Section 1: \( 3.0, 9.0, 9.0, 17.0 \)
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Section 2: \( -1.5, -1.5, 4.0, -2.9 \)
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Section 3: \( 8.8, 3.0, 5.8, 10.5 \)
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Section 4: \( 7.3, 5.7, 10.0, 7.1 \)
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Section 5: \( 7.2, 16.0, 10.0, 9.9 \)
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Boxed Final Answer
\[
\boxed{
\begin{array}{cccc}
\text{Section 1:} & 3.0 & 9.0 & 9.0 & 17.0 \\
\text{Section 2:} & -1.5 & -1.5 & 4.0 & -2.9 \\
\text{Section 3:} & 8.8 & 3.0 & 5.8 & 10.5 \\
\text{Section 4:} & 7.3 & 5.7 & 10.0 & 7.1 \\
\text{Section 5:} & 7.2 & 16.0 & 10.0 & 9.9 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 3rd grade addition and subtraction worksheet.
