Use Number Lines for Operations - 2nd Grade Math
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What is the difference shown by starting at $53$ and moving $9$ units to the left on a number line?
What is the difference shown by starting at $53$ and moving $9$ units to the left on a number line?
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$53-9=44$. Left movement subtracts the jump distance from start.
$53-9=44$. Left movement subtracts the jump distance from start.
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What is the result of $37+10$ shown as one jump of $10$ to the right on a number line?
What is the result of $37+10$ shown as one jump of $10$ to the right on a number line?
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$47$. One jump right of $10$ units adds $10$ to the start.
$47$. One jump right of $10$ units adds $10$ to the start.
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What is the result of $62-10$ shown as one jump of $10$ to the left on a number line?
What is the result of $62-10$ shown as one jump of $10$ to the left on a number line?
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$52$. One jump left of $10$ units subtracts $10$ from start.
$52$. One jump left of $10$ units subtracts $10$ from start.
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What number do you land on if you start at $45$ and move $20$ units to the right on a number line?
What number do you land on if you start at $45$ and move $20$ units to the right on a number line?
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$65$. Moving right by $20$ adds $20$ to starting position.
$65$. Moving right by $20$ adds $20$ to starting position.
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What number do you land on if you start at $80$ and move $30$ units to the left on a number line?
What number do you land on if you start at $80$ and move $30$ units to the left on a number line?
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$50$. Moving left by $30$ subtracts $30$ from starting position.
$50$. Moving left by $30$ subtracts $30$ from starting position.
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What is the distance between $14$ and $19$ on a number line?
What is the distance between $14$ and $19$ on a number line?
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$5$ units. Count the units between two points: $19-14=5$.
$5$ units. Count the units between two points: $19-14=5$.
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What is the distance between $33$ and $50$ on a number line?
What is the distance between $33$ and $50$ on a number line?
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$17$ units. Subtract positions to find distance: $50-33=17$.
$17$ units. Subtract positions to find distance: $50-33=17$.
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What missing number makes the number line jump true: start at $25$, jump right $x$, land at $32$?
What missing number makes the number line jump true: start at $25$, jump right $x$, land at $32$?
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$x=7$. Find the jump size: $32-25=7$.
$x=7$. Find the jump size: $32-25=7$.
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What missing number makes the number line jump true: start at $68$, jump left $x$, land at $60$?
What missing number makes the number line jump true: start at $68$, jump left $x$, land at $60$?
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$x=8$. Find the jump size: $68-60=8$.
$x=8$. Find the jump size: $68-60=8$.
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Which number is farther from $0$: $8$ or $13$, using number line length from $0$?
Which number is farther from $0$: $8$ or $13$, using number line length from $0$?
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$13$. $13$ is more units from $0$ than $8$ is.
$13$. $13$ is more units from $0$ than $8$ is.
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What whole-number sum within $100$ is shown by starting at $70$ and making $25$ jumps right?
What whole-number sum within $100$ is shown by starting at $70$ and making $25$ jumps right?
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$70+25=95$. Moving $25$ units right from $70$ lands at $95$.
$70+25=95$. Moving $25$ units right from $70$ lands at $95$.
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What does each tick mark represent on a number line labeled $0,1,2,3$ with equal spacing?
What does each tick mark represent on a number line labeled $0,1,2,3$ with equal spacing?
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Each tick mark represents $1$ whole unit. Equal spacing means each interval has the same length.
Each tick mark represents $1$ whole unit. Equal spacing means each interval has the same length.
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What is the missing addend in $34+\square=40$ as shown by the distance from $34$ to $40$?
What is the missing addend in $34+\square=40$ as shown by the distance from $34$ to $40$?
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$6$. The gap from $34$ to $40$ measures the missing addend.
$6$. The gap from $34$ to $40$ measures the missing addend.
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What is $70-25$ as shown by moving left $20$ and then left $5$ from $70$?
What is $70-25$ as shown by moving left $20$ and then left $5$ from $70$?
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$45$. Two leftward moves total $25$ units of subtraction.
$45$. Two leftward moves total $25$ units of subtraction.
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What is $56+7$ as shown by starting at $56$ and moving right $7$ units?
What is $56+7$ as shown by starting at $56$ and moving right $7$ units?
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$63$. Moving right $7$ units from $56$ adds $7$.
$63$. Moving right $7$ units from $56$ adds $7$.
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