Go through the Math in Focus Grade 8 Workbook Answer Key Chapter 1 Exponents to finish your assignments.
Math in Focus Grade 8 Course 3 A Chapter 1 Answer Key Exponents
Math in Focus Grade 8 Chapter 1 Quick Check Answer Key
Identify the integers in the list below.
Question 1.
4.31, -6, 8.12, 58, -211,43
Answer:
-211,-6,43 and 58,
Explanation:
Integers are positive,negative and zero but not decimal numbers therefore
from the given numbers 4.31 and 8.12 are not integers
the integers are -211,-6,43 and 58.
Write each rational number as a terminating decimal.
Question 2.
\(\frac{3}{5}\)
Answer:
0.6,
Explanation:
when we divide 3 by 5 we get terminating decimal as 0.6.
Question 3.
4\(\frac{1}{4}\)
Answer:
4.25,
Explanation:
Given 4\(\frac{1}{4}\) we get \(\frac{4 x 4 + 1}{4}\) =
\(\frac{17}{4}\) 
the terminating decimal is 4.25.
Write each rational number as a repeating decimal.
Question 4.
\(\frac{6}{11}\)
Answer:
The repeating decimal of 6/11 is 0.5363636 and so on,
Explanation:
Given to find \(\frac{6}{11}\) we get
the repeating decimal of 6/11 is 0.5363636 and so on.
Question 5.
\(\frac{5}{12}\)
Answer:
The repeating decimal of 5/12 is 0.4166 so on,
Explanation:
The repeating decimal of 5/12 is 0.4166 so on.
Locate each irrational number on a number line using rational approximation.
Question 6.
Answer:
Explanation:
Located irrational number cube root of -47 on the
number line – 3.6 using rational approximation.
Question 7.
\(\sqrt{19}\)
Answer:
Explanation:
Located irrational number square root of 19 on the
number line 4.35 using rational approximation.
Evaluate each expression.
Question 8.
-3 + (-4)
Answer:
-7,
Explanation:
Adding -3 to -4 we get -7.
Question 4.
-4 – (-2)
Answer:
-6,
Explanation:
Adding -4 to -2 we get -6.
Evaluate each expression.
Question 10.
(-7) • (-3)
Answer:
21,
Explanation:
Given -7 multiplied by -3 we get – 7 X -3 = 21.
Question 11.
(-12) ÷ 3
Answer:
-4,
Explanation:
Given to divide (-12) with 3 we get -4.