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 isor greater, we round up. If the number in the ones place isor 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 becomeand 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 becomeand the numbers to the left of the tens place stay the same.

In this case,is equal toso 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 isor greater, we round up. If the number in the tens place isor less, we round down. When we round up, the number in the hundreds place increases byand 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 thanso our rounded number is

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

means addingthree times.

and

Or we can think of this as grouping objects. We havegroups, withobjects in each group. We can count up the total number of objects, in this case triangles.

When we are dividing, we are splitting things up into groups. For this problem, we can think of this as we haveitems and we want to split them up equally intogroups. We are solving for the number of items in each group.

We can drawcircles and start putting theitems, in this case triangles, into each circle equally.

Our answer is the number of items ingroup. In this case, there aretriangles in each of the groups so our answer is.

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.

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.

Megan hasof water and when she addsshe will have

The circle is split up intoequal parts.of the parts are shaded green, which meansof the circle is green.

The rectangle is split intoequal parts, andof those parts are shaded purple.

of the rectangle is purple.

can be reduced because both the denominator and the numerator can be divided by

We can make number lines to help us solve this problem:

The two lines above are the same length. The top line is split intopieces and the bottom line is split intopieces.

andare equivalent because they occupy the same position on the number line.