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Multiplication practice

Missing-factor multiplication

Find an unknown first or second factor from a known factor and product, using a selectable blank symbol.

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Identify the known factor and product. Divide the product by the known factor, then check by multiplying the completed factors.

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US Letter

Student worksheetWorksheet with answers

A4

Student worksheetWorksheet with answers
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Learning objective

What this activity builds

Use multiplication and division as inverse operations to determine a missing factor.

Worked example

Complete 8 × □ = 56.

7

There are seven groups of 8 in 56 because 56 ÷ 8 = 7; checking gives 8 × 7 = 56.

Teaching notes

Make the practice count

  • Name whether the blank represents group count or group size.
  • Use an array with one unknown side when inverse reasoning is new.

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Math SheetNameScore/ 30TeacherDateMissing Factor MultiplicationFind the missing factor. Each displayed equation has one whole-number solution.1.N × 26 = 3642.35 × N = 8053.N × 16 = 2884.35 × N = 8405.31 × N = 5586.10 × N = 2907.N × 25 = 8008.15 × N = 1509.14 × N = 23810.39 × N = 62411.N × 22 = 66012.N × 37 = 125813.N × 14 = 43414.13 × N = 36415.35 × N = 94516.39 × N = 136517.33 × N = 72618.37 × N = 77719.16 × N = 54420.29 × N = 66721.N × 16 = 16022.15 × N = 39023.10 × N = 40024.N × 25 = 75025.N × 39 = 97526.27 × N = 72927.25 × N = 32528.N × 26 = 59829.23 × N = 64430.N × 28 = 952math-sheet.comPage 1 / 1

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