Adding integers

Same signs add and keep the sign; different signs subtract and take the sign of the larger absolute value.

Standards:7.NS.A.1.b

Try it: three questions

Real questions from the practice bank. Tap an answer to check it.

Question 1 of 3

A submarine is at 450 meters below sea level. It descends another 320 meters. What is its new depth below sea level?

Question 2 of 3

Maya has 18 trading cards. She finds 27 more cards in a box. How many cards does she have now?

Question 3 of 3

A submarine is at 250 meters below sea level. It descends another 180 meters. What is its new depth below sea level?

How this fits in

Adding integers is one skill in the Integers & Operations unit. Students read the unit lesson, then earn a bronze, silver, or gold medal on their last 10 answers. Medals never go down. A mastered unit comes back for review after 1, 3, 7, 16, and 35 days so it stays learned.

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