유리수의 사칙연산 단원 종합

B.1Add or subtract.

1. 1
   $8.1-(-6.5)=$ 
2. 2
   $-0.7+(-14.28)=$ 

B.2Multiply or divide.

1. 3
   $17.4÷(-3)=$ 
2. 4
   $7.6\times (-6.6)=$ 

B.3Add or subtract. Write each answer in simplest form.

1. 5
   $-\frac{3}{5}-\left(-\frac{1}{12}\right)=$ 
2. 6
   $-\frac{3}{4}+\frac{1}{4}=$ 

B.4Multiply or divide. Write each answer in simplest form.

1. 7
   $-\frac{3}{5}÷\frac{11}{12}=$ 
2. 8
   $-\frac{7}{8}÷\left(-\frac{1}{2}\right)=$ 

B.5Write each number as a decimal. Draw a bar over any digits that repeat.

1. 9
   $\frac{3}{4}=$ 
2. 10
   $\frac{11}{12}=$ 

B.6Write the numbers in the order shown.

1. 11
   Greatest to least: $2.6$; $-1\frac{1}{10}$; $-2.1$; $2\frac{1}{4}$
2. 12
   Least to greatest: $0.25$; $-1\frac{3}{10}$; $0.125$; $-2\frac{1}{2}$

B.7Find the distance between each pair of numbers on a number line.

1. 13
   $-8.05$ and $1.4$ 
2. 14
   $10.4$ and $-8.7$ 

B.8Write an expression and solve. Write fractions in simplest form.

1. 15
   A stock's value fell a total of $5.5$ points over $5$ days, the same amount each day. What was the change in value each day?
2. 16
   A hot-air balloon comes down $\frac{1}{4}$ feet each second. What is the change in its height after $20$ seconds?

B.9Solve. Write fractions in simplest form.

1. 17
   $-\frac{1}{4}+\left(-\frac{1}{5}\right)=$ 
2. 18
   $-\frac{1}{4}+\frac{2}{3}=$ 

B.1Add & Subtract Positive & Negative Decimals

1. 1$14.6$
2. 2$-14.98$

B.2Multiply & Divide Positive & Negative Decimals

1. 3$-5.8$
2. 4$-50.16$

B.3Add & Subtract Positive & Negative Fractions

1. 5$-\frac{31}{60}$
2. 6$-\frac{1}{2}$

B.4Multiply & Divide Positive & Negative Fractions

1. 7$-\frac{36}{55}$
2. 8$1\frac{3}{4}$

B.5Fractions to Repeating & Terminating Decimals

1. 9$0.75$
2. 10$0.91\overline{6}$

B.6Order Rational Numbers

1. 11$2.6$ > $2\frac{1}{4}$ > $-1\frac{1}{10}$ > $-2.1$
2. 12$-2\frac{1}{2}$ < $-1\frac{3}{10}$ < $0.125$ < $0.25$

B.7Distance Between Rational Numbers

1. 13$9.45$
2. 14$19.1$

B.8Rational Number Word Problems

1. 15$-1.1$ points
2. 16$-5$ feet

B.9Rational Number Operations

1. 17$-\frac{9}{20}$
2. 18$\frac{5}{12}$