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Fill in the corresponding sign for the following question
We must first consider what we need to multiply by a negative in order to obtain a positive number.
Let's remember the rule:
Therefore, the answer is as follows:
Solve the following exercise:
\( (+6)\cdot(+9)= \)
Because positive × negative = negative, not positive! If we had (+3), then (-5) × (+3) = -15, which doesn't match our target of 15.
Use this simple pattern: Same signs = positive, Different signs = negative. So (-) × (-) = (+) and (+) × (-) = (-).
Yes! Divide the result by the known number: 15 ÷ (-5) = -3. This tells you the missing number is -3, so the sign is negative.
Start with what you know: we need (-5) × (something) = 15. Since 15 is positive and (-5) is negative, the 'something' must be negative to make the product positive.
Absolutely! Just multiply it out: (-5) × (-3) = 15. If you get 15, you're correct. If you get -15, you chose the wrong sign.
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