مراجعة: العمليات على الأعداد الصحيحة

When adding integers, if the signs are DIFFERENT you...

• Add the numbers and attach the sign of the number with higher absolute value

• Subtract the numbers and attach the sign of the number with higher absolute value

• Multiply the numbers and the sign is negative

• Take the absolute value of the numbers and add

When multiplying or dividing a NEGATIVE and NEGATIVE number your result will be...

• POSITIVE
• NEGATIVE
• DEPENDS ON WHICH NUMBER IS LARGER.

When multiplying or dividing a NEGATIVE and POSITIVE number your result will be...

• Positive
• Negative
• Depends on which is bigger.

Emily is a diver. Today she descended to a depth of 40 feet below sea level. Then she swam up 10 feet and descended another 4 feet. How far below sea level is Emily now?

• -34 feet
• -54 feet
• 54 feet
• -26 feet

-8+(-2)

• -6
• -10
• 10
• 6

8 + ( - 10) =

• -18

• -2

• - 80

• 2

(20) + (- 4) =

• -16

• -8

• - 3

• 16

3 - 11

• -8

• 8

• -14

• 14

-4 - 16

• -20

• 20

• -12

• 12

3 - (-13)

• -10
• 10
• -16
• 16