Mastering Integer Addition and Subtraction

This video tutorial covers the basics of adding and subtracting integers. It explains how to add integers with the same sign by adding their absolute values and keeping the sign. For integers with different signs, it demonstrates subtracting the smaller absolute value from the larger and using the sign of the number further from zero. The tutorial also introduces the LCO method for subtraction, which involves rewriting subtraction as addition. Real-world examples, such as temperature changes and bank transactions, are used to illustrate these concepts.

What is the result of adding -4 and -3?

• -1

• 1

• 7

• -7

Tags

CCSS.7.NS.A.1C

If you add 7 and 2, what is the result?

• 5

• 9

• -9

• -5

Tags

CCSS.7.NS.A.1C

What is the result of adding 30 and -100?

• 70

• -70

• 130

• -130

Tags

CCSS.7.NS.A.1C

Calculate the sum of -9 and 8.

• 17

• -17

• 1

• -1

Tags

CCSS.7.NS.A.1C

If the temperature is 12 degrees and it falls by 15 degrees, what is the new temperature?

• -27 degrees

• 27 degrees

• -3 degrees

• 3 degrees

Tags

CCSS.7.NS.A.1C

What is the new balance if you deposit $56 into an account with a balance of -$4?

• $60

• -$52

• $52

• -$60

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CCSS.7.NS.A.1C

What does the 'L' in the LCO method stand for?

• Less

• Left

• Leave

• Last

Using the LCO method, what is the result of 2 minus 4?

• 2

• -2

• 6

• -6

Tags

CCSS.7.NS.A.1C

If the temperature drops from -4 degrees by 10 degrees, what is the new temperature?

• 6 degrees

• -6 degrees

• 14 degrees

• -14 degrees

Tags

CCSS.7.NS.A.3

What is the balance after writing a check for $590 from an account with $420?

• -$170

• $170

• $210

• -$210

Tags

CCSS.7.NS.A.1C