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Daniel Math Academy · Grade 4 Math

Input/Output Tables

Skill X.3 · Patterns · ★★☆ Medium · Quarter 1

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Find the rule and fill in the missing numbers.

1. 1
   $\begin{array}{cccccc}\text{In}& 9& 10& 11& 12& 13\\ \text{Out}& 16& & 18& 19& \end{array}$
2. 2
   $\begin{array}{cccccc}\text{In}& 10& 11& 12& 13& 14\\ \text{Out}& 3& 4& 5& & \end{array}$
3. 3
   $\begin{array}{cccccc}\text{In}& 11& 13& 15& 17& 19\\ \text{Out}& 4& 6& & 10& \end{array}$
4. 4
   $\begin{array}{cccccc}\text{In}& 14& 18& 22& 26& 30\\ \text{Out}& 7& 9& 11& & \end{array}$
5. 5
   $\begin{array}{cccccc}\text{In}& 11& 13& 15& 17& 19\\ \text{Out}& 2& 4& & & 10\end{array}$
6. 6
   $\begin{array}{cccccc}\text{In}& 8& 10& 12& 14& 16\\ \text{Out}& 13& & 17& & 21\end{array}$

Daniel Math Academy · Grade 4 Math

Answer Key

X.3 Input/Output Tables · ★★☆ Medium

1. 1$17,20$ (rule: add 7)
2. 2$6,7$ (rule: subtract 7)
3. 3$8,12$ (rule: subtract 7)
4. 4$13,15$ (rule: divide by 2)
5. 5$6,8$ (rule: subtract 9)
6. 6$15,19$ (rule: add 5)