Operations
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ISEE Lower Level Quantitative Reasoning › Operations
Explanation
Multiplication can be thought of as repeated addition, or as objects in a group.
means adding
two times.
and
Or we can think of this as grouping objects. We have groups, with
objects in each group. We can count up the total number of objects, in this case triangles.
Explanation
Multiplication can be thought of as repeated addition, or as objects in a group.
means adding
one time.
and
Or we can think of this as grouping objects. We have group, with
objects in each group. We can count up the total number of objects, in this case triangles.
When a number is divided by , and the remainder is
, which could be the number?
Explanation
In order to solve this problem, we need to divide our answer choices by , and then see which has a remainder of
.
Therefore, is the correct answer for this problem.
Find the product.
Explanation
When multiplying two negative numbers, the product will be positive. The correct answer is 77.
Explanation
Multiplication can be thought of as repeated addition, or as objects in a group.
means adding
ten times.
and
Or we can think of this as grouping objects. We have groups, with
objects in each group. We can count up the total number of objects, in this case triangles.
Zack ate pieces of chocolate at lunch and
pieces of chocolate after dinner. How many pieces did he eat?
Explanation
This is an addition problem because we want to know how many total pieces of chocolate Zack ate all together. We can add or
If it takes Jeff an hour and a half to make a round trip from his house to the airport, then how long should it take him to drive one-way from the airport to his house, in minutes?
Explanation
If it takes Jeff an hour and a half to make a round trip from his house to the airport, then it should take him half the time to drive one-way from the airport to his house.
An hour and a half is equal to 90 minutes. .
Therefore, 45 is the correct answer.
When a number is divided by , and the remainder is
, which could be the number?
Explanation
In order to solve this problem, we need to divide our answer choices by , and then see which has a remainder of
.
Therefore, is the correct answer for this problem.
If I have quarter and
nickels, how many cents do I have?
Explanation
Each quarter is worth and each nickel is worth
.
We have one quarter and three nickels.
Explanation
Multiplication can be thought of as repeated addition, or as objects in a group.
means adding
two times.
and
Or we can think of this as grouping objects. We have groups, with
objects in each group. We can count up the total number of objects, in this case triangles.