CPM Homework Help : AC Problem 2-43

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Home > AC > Chapter 2 > Lesson 2.1.4 > Problem 2-43

2-43.

Without a calculator, compute the value of each expression below.

$−3+6$
Answer (a):
$3$

$(−2)(−9)$
Hint (b):
Keep track of negative signs.

$−4−9−11$
Hint (c):
Change all the subtraction to addition. $−4+(−9)+(−11)$
Answer (c):
$−24$

$−12−18$
Hint (d):
Follow the steps in part (c).

$\frac{3}{4}(−8)$
Hint (e):
It might be helpful to change $−8$ to a fraction.
More Help (e):
Remember to reduce.

$(−2)(−2)(2)$
Hint (f):
Keep track of negative signs.

$7+(−19)$
Hint (g):
If the larger number is negative the answer will be negative.

$−15\div15$
Hint (h):
Turn the problem into a fraction.
More Help (h):
Any number divided by itself $=1$ .

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