1
+14 \div -7
Chapter 2 · Positive and Negative Numbers
Chapter challenge
Ten problems drawn from every lesson in the chapter. Get each one right on your first try for a perfect score. A new set is drawn each time.
0first-try
0of 10 done
From Dividing Signed Numbers, exercise 4
Perform the indicated division.
From Subtracting Signed Numbers, exercise 26
Use the rule: change the sign of the subtrahend, then add.
2
1-(-2)
From Subtracting Signed Numbers, exercise 21
Use the rule: change the sign of the subtrahend, then add.
3
6-(-6)
From The Number Line, exercise 10
Count along the number line above, using the two rules.
4
Subtract 4 from -2.
From Subtracting Signed Numbers, exercise 5
Subtract by asking, "What number added to the first number gives the second?"
5
Subtract -5 from -8.
From Dividing Signed Numbers, exercise 14
Perform the indicated division.
6
60 \div -5 \div -12
From Adding Signed Numbers, exercise 26
Find the missing number in each.
7
8 + {?} = 4. What number goes in place of the question mark?
From Putting It Together, exercise 28
Simplify. (A first number with no sign is positive, and numbers in side-by-side parentheses are multiplied.)
8
-3 \cdot 6
From Signed Numbers in Real Life, exercise 2
9
If the temperature is now -12°, what will it be after a rise (a) of 7°? (b) of 12°? (c) of 25°?
From Multiplying Signed Numbers, exercise 15
Find the products.
10
-4 \cdot -5 \cdot -6