규칙과 대응 단원 종합

X.1X.2Find the rule. Fill in the missing numbers.

1. 1
   $99,81,\boxed{},\boxed{},27,9$
2. 2
   $112,93,74,55,\boxed{},\boxed{}$
3. 3
   $200,164,\boxed{},\boxed{},56,20$
4. 4
   $24,86,148,\boxed{},272,\boxed{}$
5. 5
   $2.9,2.4,\boxed{},\boxed{},0.9,0.4$
6. 6
   $6.8,6.0,5.2,\boxed{},\boxed{},2.8$
7. 7
   $3.3,3.0,\boxed{},2.4,\boxed{},1.8$
8. 8
   $2.0,2.7,3.4,\boxed{},\boxed{},5.5$

X.3Complete both patterns. Then compare them.

1. 9
   $\begin{array}{lccccc}\text{A: add }3& 0& 3& 6& 9& 12\\ \text{B: add }6& 0& 6& 12& & \end{array}$ B is ​ times A.
2. 10
   $\begin{array}{lccccc}\text{A: add }5& 0& 5& 10& 15& 20\\ \text{B: add }25& 0& 25& 50& & \end{array}$ B is ​ times A.
3. 11
   $\begin{array}{lccccc}\text{A: add }6& 0& 6& 12& 18& 24\\ \text{B: add }12& 0& 12& 24& & \end{array}$ B is ​ times A.
4. 12
   $\begin{array}{lccccc}\text{A: add }8& 0& 8& 16& 24& 32\\ \text{B: add }32& 0& 32& 64& & \end{array}$ B is ​ times A.

X.4Use the rule to complete the table.

1. 13
   $y=7x+7$ $\begin{array}{cccccc}x& 2& 3& 4& 5& 6\\ y& 21& & & 42& 49\end{array}$
2. 14
   $y=6x+1$ $\begin{array}{cccccc}x& 0& 1& 2& 3& 4\\ y& 1& 7& & 19& \end{array}$
3. 15
   $y=8x+9$ $\begin{array}{cccccc}x& 3& 4& 5& 6& 7\\ y& 33& 41& & & 65\end{array}$
4. 16
   $y=5x+10$ $\begin{array}{cccccc}x& 0& 1& 2& 3& 4\\ y& 10& 15& 20& & \end{array}$

X.5Write an equation for the rule: y = …

1. 17
   $\begin{array}{cccccc}x& 3& 4& 5& 6& 7\\ y& 4& 5& 6& 7& 8\end{array}$
2. 18
   $\begin{array}{cccccc}x& 1& 2& 3& 4& 5\\ y& 16& 17& 18& 19& 20\end{array}$
3. 19
   $\begin{array}{cccccc}x& 1& 2& 3& 4& 5\\ y& 13& 14& 15& 16& 17\end{array}$
4. 20
   $\begin{array}{cccccc}x& 1& 2& 3& 4& 5\\ y& 7& 8& 9& 10& 11\end{array}$

X.1X.2Find the rule. Fill in the missing numbers.

1. 1$63,45$ (subtract 18)
2. 2$36,17$ (subtract 19)
3. 3$128,92$ (subtract 36)
4. 4$210,334$ (add 62)
5. 5$1.9,1.4$ (subtract 0.5)
6. 6$4.4,3.6$ (subtract 0.8)
7. 7$2.7,2.1$ (subtract 0.3)
8. 8$4.1,4.8$ (add 0.7)

X.3Compare Two Patterns

1. 9$18,24$; 2 times
2. 10$75,100$; 5 times
3. 11$36,48$; 2 times
4. 12$96,128$; 4 times

X.4Complete a Table from a Rule

1. 13$28$, $35$
2. 14$13$, $25$
3. 15$49$, $57$
4. 16$25$, $30$

X.5Write a Rule for a Table

1. 17$y=x+1$
2. 18$y=x+15$
3. 19$y=x+12$
4. 20$y=x+6$