Adding Rational Numbers
3+(-7)
-4
9-12
-3
20x(-5)
-100
12÷3
4
13
Jack is at −30 feet and descends another 12 feet. solve the subtraction expression.
-42
-67x(-6)
402
−4/9÷2/3
-2/3
-230+(-50)
-280
-30 -12
-42
−3/5×10/7
-6/7
-21÷7
-3
Steve climbs 2.5 miles up a trail, then another 1.75 mile, how far did Steve climb in total?
4.25
-5-(-8)
3
−2 1/4×1 2/3
-15/4
A submarine descends 180 feet in 12 minutes. What is the average change per minute?
-15 ft/min
John had 67 marbles then he got 67 more then he lost 67 marbles then he found 6 more marbles then he found 7 how many marbles does he have in total.
80 marbles
67+67=134
134-67=67
67+6= 73
73+7=80
David had a bank account of $-45 he withdrew $27 What is the new balance
-72
Jack use a recipe that calls for 1.5 batches of dough. One batch uses 0.75 cups of sugar. How much sugar is needed?
1.125 cups
−3.6÷0.24
-15
Tim is at –45 feet. A fish is swimming at 12 feet above sea level. What is the distance between them
57