Operations on Decimals For #1-2, give an approximate answer. 1. 12.37 + 89.0933828283 =



2.

5.00036737 - 2.94 =



For #3-8, the digits for each calculation are given. Write the solution including the decimal point. Where does the decimal go? 3. 2.45 x 3.15 = 7 7 1 7 5 4.

24.5 x 3.15 = 7 7 1 7 5



5.

0.245 x 3.15 = 7 7 1 7 5



6.

20.9964 ÷ 9.36 = 2 2 4 3 2 0 5



7.

209.964 ÷ 9.36 = 2 2 4 3 2 0 5



Operations on Integers Use algebra tiles to solve the following problems.

1. -3 + 2 = 2. 3 – 2 = 3. 3 - -2 = 4. -3 - -2 =

Geometry 1. What is the area of the triangle? The perimeter is 3 + 4 + 5 units or 12 units 2. What is the area of the triangle? What is the perimeter? 3. Sketch an isosceles triangle between the two horizontal lines using the dark line as a base. What is the area of the triangle? Is the perimeter the same as in #2?

base

4. Sketch a triangle between the two horizontal lines using the dark line as a base. What is the area of the triangle? Is the perimeter the same as in #2 or #3?

base





5. What is the area of each shape? How could we think about the area of each one if we didn’t remember the formula?