Solve Two-Step Multi-Operation Problems - 3rd Grade Math
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What is a reasonable estimate for $6 \times 19$ using rounding to the nearest ten?
What is a reasonable estimate for $6 \times 19$ using rounding to the nearest ten?
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$6 \times 20 = 120$. Round $19$ to $20$ for easier multiplication.
$6 \times 20 = 120$. Round $19$ to $20$ for easier multiplication.
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What is a reasonable estimate for $94 \div 3$ using compatible numbers?
What is a reasonable estimate for $94 \div 3$ using compatible numbers?
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$90 \div 3 = 30$. Use $90$ instead of $94$ for easier division.
$90 \div 3 = 30$. Use $90$ instead of $94$ for easier division.
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What is a reasonable estimate for $48 + 19$ using rounding to the nearest ten?
What is a reasonable estimate for $48 + 19$ using rounding to the nearest ten?
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$50 + 20 = 70$. Round $48$ to $50$ and $19$ to $20$.
$50 + 20 = 70$. Round $48$ to $50$ and $19$ to $20$.
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What is $g$ if $g = \frac{18 + 12}{6}$?
What is $g$ if $g = \frac{18 + 12}{6}$?
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$g = 5$. Calculate: $18 + 12 = 30$, then $30 \div 6 = 5$.
$g = 5$. Calculate: $18 + 12 = 30$, then $30 \div 6 = 5$.
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Which equation matches: $18$ pencils, buy $12$ more, then put them into $6$ equal groups. Pencils per group is $g$.
Which equation matches: $18$ pencils, buy $12$ more, then put them into $6$ equal groups. Pencils per group is $g$.
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$g = \frac{18 + 12}{6}$. Add pencils first, then divide by groups.
$g = \frac{18 + 12}{6}$. Add pencils first, then divide by groups.
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What is $m$ if $m = 5 \times 4 - 3$?
What is $m$ if $m = 5 \times 4 - 3$?
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$m = 17$. Calculate: $5 \times 4 = 20$, then $20 - 3 = 17$.
$m = 17$. Calculate: $5 \times 4 = 20$, then $20 - 3 = 17$.
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Find $m$: A class has $5$ tables with $4$ students each, then $3$ students leave. Total students is $m$.
Find $m$: A class has $5$ tables with $4$ students each, then $3$ students leave. Total students is $m$.
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$m = 5 \times 4 - 3$. Total students minus those who left.
$m = 5 \times 4 - 3$. Total students minus those who left.
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What is the value of $c$ if $c = \frac{24}{6} + 2$?
What is the value of $c$ if $c = \frac{24}{6} + 2$?
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$c = 6$. Calculate: $\frac{24}{6} = 4$, then $4 + 2 = 6$.
$c = 6$. Calculate: $\frac{24}{6} = 4$, then $4 + 2 = 6$.
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Which equation matches: $24$ cookies shared equally into $6$ bags, then $2$ more cookies added to each bag. Cookies per bag is $c$.
Which equation matches: $24$ cookies shared equally into $6$ bags, then $2$ more cookies added to each bag. Cookies per bag is $c$.
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$c = \frac{24}{6} + 2$. Divide total by bags, then add extra per bag.
$c = \frac{24}{6} + 2$. Divide total by bags, then add extra per bag.
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What is the value of $y$ in $y = 5 \times 6 + 4$?
What is the value of $y$ in $y = 5 \times 6 + 4$?
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$y = 34$. Calculate: $5 \times 6 = 30$, then $30 + 4 = 34$.
$y = 34$. Calculate: $5 \times 6 = 30$, then $30 + 4 = 34$.
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What is $n$ in the equation $n - 9 = 20$?
What is $n$ in the equation $n - 9 = 20$?
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$n = 29$. Add $9$ to both sides: $n = 20 + 9 = 29$.
$n = 29$. Add $9$ to both sides: $n = 20 + 9 = 29$.
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Identify the correct equation: $6$ bags with $4$ apples each, then eat $5$ apples. Total left is $a$.
Identify the correct equation: $6$ bags with $4$ apples each, then eat $5$ apples. Total left is $a$.
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$a = 6 \times 4 - 5$. Total apples minus eaten: $6 \times 4 - 5$.
$a = 6 \times 4 - 5$. Total apples minus eaten: $6 \times 4 - 5$.
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What operation should you do first in $8 + 3 \times 4$?
What operation should you do first in $8 + 3 \times 4$?
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Multiply: $3 \times 4$ first. Order of operations: multiplication before addition.
Multiply: $3 \times 4$ first. Order of operations: multiplication before addition.
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Which equation matches: Start with $50$, spend $6$ dollars each day for $5$ days. Money left is $d$.
Which equation matches: Start with $50$, spend $6$ dollars each day for $5$ days. Money left is $d$.
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$d = 50 - 6 \times 5$. Subtract total spent ($6 \times 5$) from starting amount.
$d = 50 - 6 \times 5$. Subtract total spent ($6 \times 5$) from starting amount.
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What is $t$ if $t = 4 \times 9 + 10$?
What is $t$ if $t = 4 \times 9 + 10$?
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$t = 46$. Calculate: $4 \times 9 = 36$, then $36 + 10 = 46$.
$t = 46$. Calculate: $4 \times 9 = 36$, then $36 + 10 = 46$.
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