Multiplication & Division within 100 — Unknown Factor and Fluency (3rd Grade) - Caitlin McCoy | Laabri

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This assessment checks students' ability to use the relationship between multiplication and division to represent division as an equation with an unknown factor and to demonstrate fluency with multiplication and division within <katex>100</katex>. It includes a balance of real-world word problems and equation-focused items.

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1

Which equation shows that splitting $24$ into $6$ equal groups gives $4$ in each group?

$6 \times 4 = 24$

$24 \times 4 = 6$

$4 \times 6 = 6$

$24 \div 4 = 6$

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1

True or False: $9 \times 5 = 45$.

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1

Write the missing number: $7 \times ? = 56$

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1

Sofia knows $8 \times 7 = 56$. Which division sentence shows the related fact with an unknown factor?

$56 \div ? = 8$

$8 \div ? = 56$

$? \times 7 = 8$

$56 \div 8 = ?$

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1

Which two equations are equivalent to $6 \times 9 = 54$?

$54 \div 6 = 9$

$9 \times 6 = 54$

$54 \div 9 = 6$

$6 + 9 = 54$

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1

Fill in the unknown: $? \times 4 = 36$

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1

Match each multiplication fact with the related division sentence that uses an unknown.

Draggable item		Corresponding Item
$8 \times 3 = 24$		$35 \div ? = 5$
$3 \times 5 = 15$		$24 \div ? = 4$
$4 \times 6 = 24$		$24 \div ? = 8$
$5 \times 7 = 35$		$15 \div ? = 3$

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1

A teacher arranges chairs in a square formation: the number of rows equals the number of chairs in each row. Let $r$ be the number of rows and chairs per row. Which choice shows a total chair count less than $30$ and explains why?

Total chairs: $r \times r$; if $r = 5$, chairs = $25$.

Total chairs: $r + r$; if $r = 6$, chairs = $12$.

Total chairs: $r \times 2$; if $r = 7$, chairs = $14$.

Total chairs: $r \times r$; if $r = 6$, chairs = $36$.