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Missing Number in the Equation

• The equation format is 12 + 20 = ----- + 12.
• To find the missing number, calculate: 12 + 20 = 32.
• Subtract 12 from 32: 32 - 12 = 20.
• Thus, the missing number is 20.

Rounding Numbers

• Rounding the number 345 to the nearest hundred involves identifying the closest hundred.
• Since 345 is closer to 300 than 400, it rounds down to 300.
• Therefore, the result is 300.

Adding Numbers

• The sum of 315 and 132:
• Calculate 315 + 132 = 447.
• Thus, the result is 447.

Verification of Statements

• Muhammad claims that subtracting 10 from 659 results in 649.
• Calculate: 659 - 10 = 649.
• His statement is correct.

Subtracting Numbers

• The result of subtracting 138 from 567:
• Calculate 567 - 138 = 429.
• Therefore, the result is 429.