ISEE Lower Level Quantitative : ISEE Lower Level (grades 5-6) Quantitative Reasoning

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

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Example Questions

Example Question #331 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

\(\displaystyle \frac{\begin{array}[b]{r}10\\ \times 12\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 120\)

\(\displaystyle 100\)

\(\displaystyle 110\)

\(\displaystyle 80\)

\(\displaystyle 90\)

Correct answer:

\(\displaystyle 120\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 10\times12\) means adding \(\displaystyle 12\) ten times. 

\(\displaystyle 12+12+12+12+12+12+12+12+12+12=120\) and \(\displaystyle 10\times12=120\)

Or we can think of this as grouping objects. We have \(\displaystyle 10\) groups, with \(\displaystyle 12\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #231 : How To Multiply

\(\displaystyle \frac{\begin{array}[b]{r}11\\ \times 10\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 110\)

\(\displaystyle 77\)

\(\displaystyle 99\)

\(\displaystyle 121\)

\(\displaystyle 88\)

Correct answer:

\(\displaystyle 110\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 11\times10\) means adding \(\displaystyle 10\) eleven times. 

\(\displaystyle 10+10+10+10+10+10+10+10+10+10+10=110\) and \(\displaystyle 11\times10=110\)

Or we can think of this as grouping objects. We have \(\displaystyle 11\) groups, with \(\displaystyle 10\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #131 : Common Core Math: Grade 3

\(\displaystyle \frac{\begin{array}[b]{r}12\\ \times 9\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 120\)

\(\displaystyle 144\)

\(\displaystyle 132\)

\(\displaystyle 108\)

\(\displaystyle 96\)

Correct answer:

\(\displaystyle 108\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 12\times9\) means adding \(\displaystyle 9\) twelve times. 

\(\displaystyle 9+9+9+9+9+9+9+9+9+9+9+9=108\) and \(\displaystyle 12\times9=108\)

Or we can think of this as grouping objects. We have \(\displaystyle 12\) groups, with \(\displaystyle 9\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #132 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}4\\ \times 2\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 8\)

\(\displaystyle 20\)

\(\displaystyle 16\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 8\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 4\times2\) means adding \(\displaystyle 2\) four times. 

\(\displaystyle 2+2+2+2=8\) and \(\displaystyle 4\times2=8\)

Or we can think of this as grouping objects. We have \(\displaystyle 4\) groups, with \(\displaystyle 2\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #133 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}10\\ \times 3\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 30\)

\(\displaystyle 20\)

\(\displaystyle 50\)

\(\displaystyle 40\)

\(\displaystyle 60\)

Correct answer:

\(\displaystyle 30\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 10\times3\) means adding \(\displaystyle 3\) ten times. 

\(\displaystyle 3+3+3+3+3+3+3+3+3+3=30\) and \(\displaystyle 10\times3=30\)

Or we can think of this as grouping objects. We have \(\displaystyle 10\) groups, with \(\displaystyle 3\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #134 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}8\\ \times 4\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 48\)

\(\displaystyle 32\)

\(\displaystyle 40\)

\(\displaystyle 64\)

\(\displaystyle 56\)

Correct answer:

\(\displaystyle 32\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 8\times4\) means adding \(\displaystyle 4\) six times. 

\(\displaystyle 4+4+4+4+4+4+4+4=32\) and \(\displaystyle 8\times4=32\)

Or we can think of this as grouping objects. We have \(\displaystyle 8\) groups, with \(\displaystyle 4\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #135 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}2\\ \times 6\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 24\)

\(\displaystyle 36\)

\(\displaystyle 30\)

\(\displaystyle 12\)

\(\displaystyle 18\)

Correct answer:

\(\displaystyle 12\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 2\times6\) means adding \(\displaystyle 6\) two times. 

\(\displaystyle 6+6=12\) and \(\displaystyle 2\times6=12\)

 

Or we can think of this as grouping objects. We have \(\displaystyle 2\) groups, with \(\displaystyle 6\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #136 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}5\\ \times 8\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 30\)

\(\displaystyle 25\)

\(\displaystyle 35\)

\(\displaystyle 45\)

\(\displaystyle 40\)

Correct answer:

\(\displaystyle 40\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 5\times8\) means adding \(\displaystyle 8\) five times. 

\(\displaystyle 8+8+8+8+8=40\) and \(\displaystyle 5\times8=40\)

Or we can think of this as grouping objects. We have \(\displaystyle 5\) groups, with \(\displaystyle 8\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #137 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}5\\ \times 4\end{array}}{ \ \ \ \space}\)

 

 

Possible Answers:

\(\displaystyle 20\)

\(\displaystyle 15\)

\(\displaystyle 5\)

\(\displaystyle 25\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 20\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 5\times4\) means adding \(\displaystyle 4\) five times. 

\(\displaystyle 4+4+4+4+4=20\) and \(\displaystyle 5\times4=20\)

Or we can think of this as grouping objects. We have \(\displaystyle 5\) groups, with \(\displaystyle 4\) objects in each group. We can count up the total number of objects, in this case triangles. 

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Example Question #138 : Operations & Algebraic Thinking

\(\displaystyle \frac{\begin{array}[b]{r}7\\ \times 2\end{array}}{ \ \ \ \space}\)

 

Possible Answers:

\(\displaystyle 14\)

\(\displaystyle 7\)

\(\displaystyle 21\)

\(\displaystyle 35\)

\(\displaystyle 28\)

Correct answer:

\(\displaystyle 14\)

Explanation:

Multiplication can be thought of as repeated addition, or as objects in a group. 

\(\displaystyle 7\times2\) means adding \(\displaystyle 2\) seven times. 

\(\displaystyle 2+2+2+2+2+2+2=14\) and \(\displaystyle 7\times2=14\)

Or we can think of this as grouping objects. We have \(\displaystyle 7\) groups, with \(\displaystyle 2\) objects in each group. We can count up the total number of objects, in this case triangles. 

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