Grade 6 Mental Math Worksheets | Free Printables - Free Printable

Problem Explanation:

The image contains a mental math worksheet for Grade 6 students. The worksheet is divided into four sections: Add, Subtract, Multiply, and Divide. Each section has 10 problems that need to be solved mentally.

Solution Approach:

We will solve each problem step by step, ensuring clarity and accuracy.

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#### Section 1: Add
1. \( 115 + 192 = 307 \)
2. \( 74 + 164 = 238 \)
3. \( 181 + 97 = 278 \)
4. \( 263 + 85 = 348 \)
5. \( 468 + 119 = 587 \)
6. \( 376 + 76 = 452 \)
7. \( 82 + 241 = 323 \)
8. \( 167 + 39 = 206 \)
9. \( 257 + 145 = 402 \)
10. \( 374 + 94 = 468 \)

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#### Section 2: Subtract
1. \( 352 - 91 = 261 \)
2. \( 428 - 198 = 230 \)
3. \( 217 - 160 = 57 \)
4. \( 95 - 39 = 56 \)
5. \( 274 - 122 = 152 \)
6. \( 152 - 131 = 21 \)
7. \( 196 - 68 = 128 \)
8. \( 284 - 99 = 185 \)
9. \( 572 - 321 = 251 \)
10. \( 724 - 89 = 635 \)

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#### Section 3: Multiply
1. \( 40 \times 40 = 1600 \)
2. \( 80 \times 50 = 4000 \)
3. \( 20 \times 90 = 1800 \)
4. \( 60 \times 60 = 3600 \)
5. \( 70 \times 40 = 2800 \)
6. \( 800 \times 40 = 32000 \)
7. \( 600 \times 90 = 54000 \)
8. \( 70 \times 800 = 56000 \)
9. \( 30 \times 600 = 18000 \)
10. \( 40 \times 400 = 16000 \)

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#### Section 4: Divide
1. \( 320 \div 40 = 8 \)
2. \( 640 \div 80 = 8 \)
3. \( 630 \div 90 = 7 \)
4. \( 240 \div 60 = 4 \)
5. \( 200 \div 40 = 5 \)
6. \( 720 \div 9 = 80 \)
7. \( 810 \div 9 = 90 \)
8. \( 210 \div 3 = 70 \)
9. \( 420 \div 6 = 70 \)
10. \( 480 \div 8 = 60 \)

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Final Answer:

\[
\boxed{
\begin{array}{cccc}
\text{Add} & \text{Subtract} & \text{Multiply} & \text{Divide} \\
1. 307 & 1. 261 & 1. 1600 & 1. 8 \\
2. 238 & 2. 230 & 2. 4000 & 2. 8 \\
3. 278 & 3. 57 & 3. 1800 & 3. 7 \\
4. 348 & 4. 56 & 4. 3600 & 4. 4 \\
5. 587 & 5. 152 & 5. 2800 & 5. 5 \\
6. 452 & 6. 21 & 6. 32000 & 6. 80 \\
7. 323 & 7. 128 & 7. 54000 & 7. 90 \\
8. 206 & 8. 185 & 8. 56000 & 8. 70 \\
9. 402 & 9. 251 & 9. 18000 & 9. 70 \\
10. 468 & 10. 635 & 10. 16000 & 10. 60 \\
\end{array}
}
\]