Use Arrays to Add Equal Groups - 2nd Grade Math
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What equation shows the total in an array with $2$ rows of $5$ objects each?
What equation shows the total in an array with $2$ rows of $5$ objects each?
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$5+5=10$. Add $5$ twice for $2$ rows.
$5+5=10$. Add $5$ twice for $2$ rows.
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What is the meaning of "columns" in a rectangular array?
What is the meaning of "columns" in a rectangular array?
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Vertical lines of objects in the array. Columns go up and down.
Vertical lines of objects in the array. Columns go up and down.
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What is the meaning of "rows" in a rectangular array?
What is the meaning of "rows" in a rectangular array?
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Horizontal lines of objects in the array. Rows go across from left to right.
Horizontal lines of objects in the array. Rows go across from left to right.
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What repeated-addition equation matches an array with $2$ columns and $3$ rows?
What repeated-addition equation matches an array with $2$ columns and $3$ rows?
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$2+2+2=6$. Add column count for each row: $2$ per row, $3$ rows.
$2+2+2=6$. Add column count for each row: $2$ per row, $3$ rows.
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What repeated-addition equation matches an array with $3$ columns and $2$ rows?
What repeated-addition equation matches an array with $3$ columns and $2$ rows?
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$3+3=6$. Add column count for each row: $3$ per row, $2$ rows.
$3+3=6$. Add column count for each row: $3$ per row, $2$ rows.
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What is the total number of objects in an array with $1$ row and $4$ columns?
What is the total number of objects in an array with $1$ row and $4$ columns?
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$4$. One row means just count the columns.
$4$. One row means just count the columns.
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What does the word "array" mean in math?
What does the word "array" mean in math?
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An arrangement of objects in equal rows and equal columns. Objects form a rectangular pattern with equal spacing.
An arrangement of objects in equal rows and equal columns. Objects form a rectangular pattern with equal spacing.
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Find the missing number: $3+3+3+3+3=\square$ for an array with $5$ rows of $3$.
Find the missing number: $3+3+3+3+3=\square$ for an array with $5$ rows of $3$.
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$15$. Five groups of $3$ equals $15$.
$15$. Five groups of $3$ equals $15$.
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What is the total for an array shown by $1+1+1+1$?
What is the total for an array shown by $1+1+1+1$?
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$4$. Four groups of $1$ equals $4$.
$4$. Four groups of $1$ equals $4$.
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What is the total for an array shown by $2+2+2+2+2$?
What is the total for an array shown by $2+2+2+2+2$?
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$10$. Five groups of $2$ equals $10$.
$10$. Five groups of $2$ equals $10$.
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Find and correct the equation for $4$ rows of $2$: $4+4=8$.
Find and correct the equation for $4$ rows of $2$: $4+4=8$.
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Correct: $2+2+2+2=8$. Four rows of $2$ means adding $2$ four times, not $4$ twice.
Correct: $2+2+2+2=8$. Four rows of $2$ means adding $2$ four times, not $4$ twice.
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Which equation shows $5$ columns of $4$: $4+4+4+4+4$ or $5+5+5+5$?
Which equation shows $5$ columns of $4$: $4+4+4+4+4$ or $5+5+5+5$?
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$4+4+4+4+4$. Five groups of $4$ matches $5$ columns with $4$ in each.
$4+4+4+4+4$. Five groups of $4$ matches $5$ columns with $4$ in each.
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Which equation shows $4$ rows of $5$: $5+5+5+5$ or $4+4+4+4+4$?
Which equation shows $4$ rows of $5$: $5+5+5+5$ or $4+4+4+4+4$?
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$5+5+5+5$. Four groups of $5$ matches $4$ rows with $5$ in each.
$5+5+5+5$. Four groups of $5$ matches $4$ rows with $5$ in each.
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What is the missing number in $4+4+4=\square$ for an array of $3$ rows of $4$?
What is the missing number in $4+4+4=\square$ for an array of $3$ rows of $4$?
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$12$. Three groups of $4$ equals $12$.
$12$. Three groups of $4$ equals $12$.
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What equation shows the total in an array with $5$ rows of $2$ objects each?
What equation shows the total in an array with $5$ rows of $2$ objects each?
Tap to reveal answer
$2+2+2+2+2=10$. Add $2$ five times for $5$ rows.
$2+2+2+2+2=10$. Add $2$ five times for $5$ rows.
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