Mathematics for IGCSE & O level - The Four Operations (Section 9 - No. 2)
Which of the following statements are true regarding the rules for multiplication and division with positive and negative numbers?
If the signs are different, the answer is negative.
If the signs are the same, the answer is positive.
The sign of the answer follows the sign of the larger number.
When multiplying or dividing with different signs, always subtract.
Giải thích
The rules for multiplication and division of numbers with signs