Multiplying by Multiples of 10

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Grade 3MathMultiplication & DivisionCCSS 3.NBT.A.3

Skill: Multiplying one-digit numbers by multiples of 10 from 10 to 90

Preview of the Multiplying by Multiples of 10 printable worksheet
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10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

Once third graders know their multiplication facts, they can use them to multiply by tens. If 6 × 4 = 24, then 6 × 40 is 24 tens, or 240. This third-grade worksheet gives sixteen problems that multiply a one-digit number from 2 to 9 by a multiple of 10 from 10 to 90, such as 7 × 30 and 80 × 5. Students write each product.

The multiple of ten comes first in some problems and second in others, so students practice seeing that the order of the factors does not change the product. The ten versions use every possible problem of this type before any repeat.

How to use it: talk about the meaning before teaching a shortcut. Show 3 × 20 as three groups of two ten-rods, and count the tens: six tens make 60. Then try a few problems out loud, saying "seven times three tens is twenty-one tens, which is 210." Then students can multiply the basic fact and write one zero. Watch for 5 × 40: the fact 20 already ends in zero, so 200 has two zeros.

The separate answer-key PDF lists every product in order. This worksheet supports Common Core standard 3.NBT.A.3 (multiply one-digit whole numbers by multiples of 10 in the range 10 to 90 using strategies based on place value and properties of operations). Review our Multiplication Facts 2-5 and Multiplication Facts 6-9 worksheets first, and use our Multi-Digit Multiplication worksheet next.