Sargent Park 8-73 Math

Saturday, January 21, 2006

My Memories of Integers + Last week stuff

When adding a positive (+) and a negative (-) number, the answer is always positive. e.g. 7+(-5) = 2
You can change the addition symbol to a subtraction one and convert the negative number to a positive to have 7 - 5 = 2.

When adding numbers with the same symbol, the answer has the same symbol aswell.
e.g. (-4) + (-3) = -7
or 4 + 3 = 7

When subtracting a negative number from a positive number, the answer is always negative. e.g. 6 - (-6) = 12
You can also change the subtraction symbol to an addition one and convert the negative number to a positive number to have 6 + 6 = 12.

When subtracting numbers with the same symbol, the answer also has the same symbol as well.
e.g. (-4) - (-3) = -7
or 4 - 3 = 1

When multiplying or dividing numbers with the same symbol, the answer is always positive.
e.g. 11 x 3 = 33

When multiplying or dividing numbers with different symbols, the answer is always negative.
e.g. -10 x 1 = 10

- - -

A restaurant served 4 dinners. For every 2 dinners served, 1 were seafood. How many seafood dinners were served?
***You're going to have to fill in the numbers in the blank boxes here.




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