Page 167 - NUMINO_WB_2A

041_G2U7_WB˙—» ¿º 2011.3.31 7:7 PM ˘ ` 17

041-P2-1

Find the Rule
Find the rule. Then, write the correct numbers in the blanks.
39
39 39
21 34 26
68 47 13 39

Step 1. What is the rule for the numbers?
21

68 47

Step 2. Use the rule to write the correct number in the blank.
39

21 34
68 47 13

Step 3. Use the rule to write the correct numbers in the blanks.
39

39 39
21 34 26
68 47 13 39