3rd Grade Math - 3rd Grade Math
Card 0 of 48
Solve:
Solve:
When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we have 
items and we want to split them up equally into 
groups. We are solving for the number of items in each group.
We can draw 
circles and start putting the 
items, in this case triangles, into each circle equally.
Our answer is the number of items in 
group. In this case, there are 
triangles in each of the groups so our answer is 
.
When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we have 
We can draw 
Our answer is the number of items in
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Solve:
Solve:
Multiplication can be thought of as repeated addition, or as objects in a group.
means adding 
three 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.
Multiplication can be thought of as repeated addition, or as objects in a group.
Or we can think of this as grouping objects. We have
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What fraction of the circle is green?
What fraction of the circle is green?
The circle is split up into 
equal parts. 
of the parts are shaded green, which means 
of the circle is green.
The circle is split up into
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What fraction of the rectangle is purple?
What fraction of the rectangle is purple?
The rectangle is split into 
equal parts, and 
of those parts are shaded purple.
of the rectangle is purple.
can be reduced because both the denominator and the numerator can be divided by 
The rectangle is split into
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Select the fraction that is equivalent to 
Select the fraction that is equivalent to
We can make number lines to help us solve this problem:
The two lines above are the same length. The top line is split into 
pieces and the bottom line is split into 
pieces.
and 
are equivalent because they occupy the same position on the number line.
We can make number lines to help us solve this problem:
The two lines above are the same length. The top line is split into
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Fill in the blank with the correct symbol.
Fill in the blank with the correct symbol.
The fraction models below show 
and 
is greater than 
because more of the model is filled in.
The fraction models below show
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Solve:
Solve:
Multiplication can be thought of as repeated addition, or as objects in a group.
means adding three 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.
Multiplication can be thought of as repeated addition, or as objects in a group.
Or we can think of this as grouping objects. We have
Compare your answer with the correct one above
Solve:
Solve:
When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we have items and we want to split them up equally into groups. We are solving for the number of items in each group.
We can draw circles and start putting the items, in this case triangles, into each circle equally.
Our answer is the number of items in group. In this case, there are triangles in each of the groups so our answer is .
When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we have
We can draw
Our answer is the number of items in
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What is the area of the rectangle?
What is the area of the rectangle?
The formula to find area is 
.
We are given the length and the width from the problem, so we can plug those values into our equation and solve.
*Area is the number of square units inside a shape, which is why area is always written with square units.
The formula to find area is
We are given the length and the width from the problem, so we can plug those values into our equation and solve.
*Area is the number of square units inside a shape, which is why area is always written with square units.
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What is the area of the figure below?
What is the area of the figure below?
To find the area of the figure above, we need to slip the figure into two rectangles.
Using our area formula, 
, we can solve for the area of both of our rectangles
To find our final answer, we need to add the areas together.
To find the area of the figure above, we need to slip the figure into two rectangles.
Using our area formula,
To find our final answer, we need to add the areas together.
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What is 
rounded to the nearest ten?
What is
When we round a number to the tens place we look to our ones place to tell us if we round up or down.
If the number in our ones place is 
or greater, we round up. If the number in the ones place is 
or less, we round down. When we round up, the number in the tens place increases by 
. The numbers to the right of the tens place become 
and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become 
and the numbers to the left of the tens place stay the same.
In this case, 
is equal to 
so our rounded number is 
When we round a number to the tens place we look to our ones place to tell us if we round up or down.
If the number in our ones place is
In this case,
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What is 
rounded to the nearest hundred?
What is
When we round a number to the hundreds place we look to our tens place to tell us if we round up or down.
If the number in our tens place is 
or greater, we round up. If the number in the tens place is 
or less, we round down. When we round up, the number in the hundreds place increases by 
and all the other numbers become 
. When we round down, the number in the hundreds place stays the same and all the other numbers become 
.
In this case, 
is less than 
so our rounded number is 
When we round a number to the hundreds place we look to our tens place to tell us if we round up or down.
If the number in our tens place is
In this case,
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Megan is working on a science experiment. Using the scale below, how much water will she have if she adds 
more grams of water?
Megan is working on a science experiment. Using the scale below, how much water will she have if she adds
Megan has 
of water and when she adds 
she will have 
Megan has
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Megan is working on a science experiment. Using the scale below, how much water will she have if she adds more grams of water?
Megan is working on a science experiment. Using the scale below, how much water will she have if she adds
Megan has of water and when she adds she will have
Megan has
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In Spot’s toy basket he has 
balls. There are 
more stuffed animals than balls and there is double the number of ropes than balls. How many toys does Spot have in his basket?
In Spot’s toy basket he has
To solve this problem, we first have to find our unknowns. Our unknowns are the number of ropes and stuffed animals that Spot has. We can set up equations for these unknowns by letting 
represent ropes and 
represent stuffed animals.
because he has 
more stuffed animals than his 
balls.
because double means 
times more.
Now we need to add up our number of balls, stuffed animals and ropes to find our total.
To solve this problem, we first have to find our unknowns. Our unknowns are the number of ropes and stuffed animals that Spot has. We can set up equations for these unknowns by letting
Now we need to add up our number of balls, stuffed animals and ropes to find our total.
Compare your answer with the correct one above
What is rounded to the nearest ten?
What is
When we round a number to the tens place we look to our ones place to tell us if we round up or down.
If the number in our ones place is or greater, we round up. If the number in the ones place is or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become and the numbers to the left of the tens place stay the same.
In this case, is equal to so our rounded number is
When we round a number to the tens place we look to our ones place to tell us if we round up or down.
If the number in our ones place is
In this case,
Compare your answer with the correct one above
What is rounded to the nearest hundred?
What is
When we round a number to the hundreds place we look to our tens place to tell us if we round up or down.
If the number in our tens place is or greater, we round up. If the number in the tens place is or less, we round down. When we round up, the number in the hundreds place increases by and all the other numbers become . When we round down, the number in the hundreds place stays the same and all the other numbers become .
In this case, is less than so our rounded number is
When we round a number to the hundreds place we look to our tens place to tell us if we round up or down.
If the number in our tens place is
In this case,
Compare your answer with the correct one above
What is rounded to the nearest ten?
What is
When we round a number to the tens place we look to our ones place to tell us if we round up or down.
If the number in our ones place is or greater, we round up. If the number in the ones place is or less, we round down. When we round up, the number in the tens place increases by . The numbers to the right of the tens place become and the numbers to the left of the tens place stay the same. When we round down, the number in the tens place stays the same. The numbers to the right of the tens place become and the numbers to the left of the tens place stay the same.
In this case, is equal to so our rounded number is
When we round a number to the tens place we look to our ones place to tell us if we round up or down.
If the number in our ones place is
In this case,
Compare your answer with the correct one above
What is rounded to the nearest hundred?
What is
When we round a number to the hundreds place we look to our tens place to tell us if we round up or down.
If the number in our tens place is or greater, we round up. If the number in the tens place is or less, we round down. When we round up, the number in the hundreds place increases by and all the other numbers become . When we round down, the number in the hundreds place stays the same and all the other numbers become .
In this case, is less than so our rounded number is
When we round a number to the hundreds place we look to our tens place to tell us if we round up or down.
If the number in our tens place is
In this case,
Compare your answer with the correct one above
Solve:
Solve:
When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we have items and we want to split them up equally into groups. We are solving for the number of items in each group.
We can draw circles and start putting the items, in this case triangles, into each circle equally.
Our answer is the number of items in group. In this case, there are triangles in each of the groups so our answer is .
When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we have
We can draw
Our answer is the number of items in
Compare your answer with the correct one above