40
-79
First, multiply the original number by 10. Then multiply the original number by 2. Add the two answers that you got and you have just multiplied by 12. For Example: 7x12=(7x10)+(7x2) 70+14 84
32
12
Multiply the number of feet times 12, and add to the inches.
When you multiply a negative number by a positive number, the result is always a negative number. This is due to the rules of multiplication, where the sign of the product is determined by the signs of the factors. Specifically, a negative times a positive yields a negative. For example, multiplying -3 by 4 results in -12.
A negative multiplied by another negative will always give a positive answer. E.g. -4 x - 3 = 12
A negative number e.g 3 times -4 = -12 Do the normal sum then add in the minus (when timing) :)
You get 50.
-196
The factors that multiply to 120 and add up to -8 are -12 and 10. This is because when you multiply -12 and 10, you get -120, and when you add them together, you get -8. Thus, the pair of factors you are looking for is (-12, 10).
13