Texas Math Models

Try “number line” or “4.5D”

Try rules on the first pair

add, subtract, multiply, divide

G3

What rule turns 1 into 6? Try every kind on the first pair.Pencils in PacksPacksPencils16212318424start with the first pair: 1 and 6a rule may add, subtract, multiply or divide1 + 5 = 6  ✓1 × 6 = 6  ✓two rules fit, and they cannot both be itone pair is never enoughtry the kinds you know on the first pair and keep whatever survives

How this one works

How

ask what turns the first left number into the first right one. Try + − × ÷.

Best when

nothing in the words tells you the rule.

seen one of these on a test? See it on a real question: TEKS 3.5E, finding the rule in a table.

The same problem, other ways