Same Sign Addition
145+330
475
-19+5
-14
How many zero pairs does the expression have?
-75+(-22)
none
5
-86+(-28)
-114
15+(-30) +(-3)
-18
Please draw a number line using VECTORS for (-9)+4 and find the sum.
Answer: You must have a number line drawn with two vectors displayed.
Sum: -5
How many zero pairs does the expression have?
-378+48
48
When adding numbers with different signs, what is a rule to find out if the sum is negative or positive?
Whatever number has the higher absolute value will determine the sign
-247+(-38) + (-21)
-306
-234+182?
-52
Draw a number line using hops to simplify the expression below. Then, state the sum.
7 + (-3) + (-6)
Sum:-2
Explain with correct vocabulary whether the sum in positive or negative and why.
-20 + 15
Negative. This is because the number with the larger absolute value(further from zero) is negative.
At midnight, the temperature outside was -12 degrees. By noon the next day the temperature rose 4 degrees. What is the temperature at noon the next day?
-8 degrees
-138.3+(-9.7)
-148
-62.72 +50.3
-12.42
Simplify 8+(-12) + 16 + (-20) + 1 + 13 + (-4).
2
Determine if the sum is positive or negative and state how you know.
-800+(-900)
The sum is negative because when you add two negative integers the sum is always negative. No zero pairs are created.
Christine lost 14 pounds in one month of dieting. In the next month, she lost another 28 pounds. In the third month, she gained back 45 pounds. Which addition expression can be used to find Christine's net weight gain/loss over the course of three months?
-14 + (-28) + 45
-4.35 + (-4.22) + (-4.07) + (-4.1)
-16.74
72+(-99) +123 + (-6)
90
-16.8 + (-16.8) + 4.2
-29.4
73+(-5) + (-4) + (-73) + 5 + (-4)
-8
On Monday, Ashley finds $5 on the ground. On Tuesday, she remembers that she owes her sister $6. On Wednesday, her mom gives her an allowance of $13. Write an addition expression to model the situation.
5 + (-6) + 13