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ALGEBRA 1 LESSON 1-6
Dividing Real Numbers
Simplify each expression.
a.
70 ÷ (–5) = –14
b.
The quotient of a positive number
and a negative number is negative.
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–54 ÷ (–9) = 6
The quotient of a negative
number and a negative number
is positive.
ALGEBRA 1 LESSON 1-6
Dividing Real Numbers
x
Evaluate – y – 4z2 for x = 4, y = –2, and z = –4.
–4
– x – 4z2 = –2 – 4(–4)2
y
–4
Substitute 4 for x, –2 for y, and –4 for z.
= –2 – 4(16)
Simplify the power.
= 2 – 64
Divide and multiply.
= –62
Subtract.
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ALGEBRA 1 LESSON 1-6
Dividing Real Numbers
Evaluate p for p = 3 and r = – 3 .
r
p
=p÷r
r
2
4
Rewrite the equation.
3
(– 34 )
Substitute 2 for p and – 4 for r.
3
4
Multiply by – 3 , the reciprocal of – 4 .
= 2 ÷
= 2 (– 3
= –2
)
3
3
4
Simplify.
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3
ALGEBRA 1 LESSON 1-6
Dividing Real Numbers
Simplify.
1. –8(–7)
2. –6(–7 + 10) – 4
– 22
56
Evaluate each expression for m = –3, n = 4, and p = –1.
3. 8m + p
n
–7
4. (mp)3
5. mnp
27
12
1
2
6. Evaluate 2a ÷ 4b – c for a = –2, b = – 1 , and c = – .
3
1
32
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