Bell Ringer #4 A submarine is cruising at a depth of 30m. It climbs 12m, then dives 21m, and then climbs 13m. At what depth is the submarine? Un submarino es de crucero a una profundidad de 30 metros. Se sube a 12 metros, y luego se sumerge 21m, y luego sube 13m. ¿A qué profundidad está el submarino ?
2.4 Subtraction of Rational Numbers
Subtraction Rule Subtracting is the same as ADDING THE OPPOSITE!!! Add the numbers and keep the sign of the bigger number.
Subtract. -3 – 4 =
-8 – (-5) =
-4 – (-6) =
Subtract without a number line. 2 – 6 =
4 – 9 =
6 – (-4) =
- 4 – 17 =
- 3 – (-12) =
- 86 – (-400) =
- 4.2 – (-3.6) =
4 – 5 + (-3) + 1=
- 6 – (-2) – (-4) – =
Ticket Out the Door 3 – (-7.1) (-5.2)=
Homework Pg. 74 #’s 10 – 30 even #’s