Grades 5–6 Skill Standards: CCSS 5.OA.B.3

Multiplicative (Doubling) Patterns (Grades 5–6)

In a multiplicative pattern, each term is the previous one multiplied by a fixed number (the ratio), not added to. 2, 4, 8, 16 doubles each time (×2); 3, 9, 27 triples (×3). Find the ratio by dividing a term by the one before it, then keep multiplying.

What it is

Understanding multiplicative patterns

In a multiplicative pattern, each term is the previous one multiplied by a fixed number (the ratio), not added to. 2, 4, 8, 16 doubles each time (×2); 3, 9, 27 triples (×3). Find the ratio by dividing a term by the one before it, then keep multiplying.

Key Idea

In a multiplicative pattern, each term is the previous one multiplied by a fixed number (the ratio), not added to. 2, 4, 8, 16 doubles each time (×2); 3, 9, 27 triples (×3). Find the ratio by dividing a term by the one before it, then keep multiplying.

Worked Example

Seeing it in action

1
Worked example

Continue: 2, 4, 8, 16, __.

Ratio = 4 ÷ 2 = 2 (doubling). Next = 16 × 2 = 32.

Visual model
2 4 8 16 32 ×2

Multiply by the same ratio each time.

Interactive Check

Try a few

3, 9, 27, __
Answer: 81

×3.

1, 5, 25, __
Answer: 125

×5.

2, 6, 18, __
Answer: 54

×3.

Free game

Number Current

A calm number-line game for placing whole numbers and extending patterns.

Play: Number Current

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Practice multiplicative patterns in Numeris with instant feedback.

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Try six fraction, angle, perimeter and area questions with explained answers, for grades 4–6.

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