2018 Decimals 2. Name: EP 4/ #

Transcription

1 2018 Decimals 2 Worksheet #1: Addition Worksheet #2: Subtraction Worksheet #3: Multiplication Worksheet #4: Division Worksheet #5: Estimation Worksheet #6: Word Problems Plus activities Name: EP 4/ #

2 Addition Grade 4 Test Maths Worksheet 1 Rewrite the problem in vertical form lining up the decimal points. 1) = 2) = 3) = Be careful to line up the decimal points exactly and add zeroes where needed. 4) = 5) = 6) = 1

3 Subtraction Grade 4 Test Maths Worksheet 2 Rewrite the problem in vertical form lining up the decimal points. 1) = 2) = 3) = Be careful to line up the decimal points exactly and add zeroes where needed. 4) = 5) = 6) = 2

4 Multiplication Grade 4 Test Maths Worksheet 3 Rewrite the problem in vertical form. 1) 0.3 x 7 = 2) 0.9 x 4 = 3) 4.3 x 3 = 4) 2.98 x 5 = 5) 10.5 x 6 = 6) 91.9 x 2 = 3

5 Division Grade 4 Test Maths Worksheet 4 Rewrite the problem in long division form and show your work. 1) = 2) = 3) = 4) = 5) = 6) = 4

6 Estimation Grade 4 Test Maths Worksheet 5 Estimate by rounding off to the nearest whole number, then rewrite the problem and solve. The first problem is done for you. 1) ) 45.9 x 6 2) ) 1.23 x 3 3) ) ) )

7 Word Problems: Using Math Models Grade 4 Test Maths Worksheet 6 1) Read the problem carefully. 2) Draw a math model (like thinking blocks). 3) Write the equation to solve the problem and do your calculations. 4) Read the problem again and check that your model matches. 5) Read the question again and check you answered this question completely. 6) Finally, write a sentence answer. Although Mount Everest is at the highest elevation above sea level on Earth at 8.85 km, it is not the tallest mountain. Mauna Kea, on the island of Hawaii, rises km from its base on the seafloor. How much taller is Mauna Kea than Mount Everest? Math Model Equation to solve (and working out) =? Sentence Answer Mauna Kea is km taller than Mt. Everest. 6

8 1) The tallest volcano on Earth is Mauna Kea in Hawaii. It measures km from its base. The tallest volcano in our solar system is probably Olympus Mons on the planet, Mars. It is km taller than Mauna Kea. How tall is Olympus Mons? Math Model Equation to solve (and working out) Sentence Answer 2) The Vesta Asteroid is miles in diameter. The diameter of its Rheasilvia crater is miles less than Vesta s diameter. This makes the Rheasilvia crater one of the largest in our solar system. What is the diameter of Rheasilvia crater? Math Model Equation to solve (and working out) Sentence Answer 7

9 3) NASA s Mars Rover can only get enough energy to work for 4 hours a day. If it can go meters per day, how far can it go in 1 week? Mars Rover Math Model Equation to solve (and working out) Sentence Answer 4) The Mars Rover collects soil and rock samples from the planet surface for scientists to study. They recently made an amazing discovery. 0.09m 3 of soil from Mars had 3 liters of water in it. How much soil would scientists need to collect to get 1 liter of water? Math Model Equation to solve (and working out) Sentence Answer 8

10 Area & Perimeter Worksheet #7: Perimeter of Squares & Rectangles Worksheet #8: Area of Squares & Rectangles Worksheet #9: Composite Figures Worksheet #10: Word Problems plus activities Name: EP 4/ #

11 Straw Polygons Using straws of 4 cm, 8 cm and 12 cm, build polygons (many-sided figures). Draw the polygons you make, write the measurement of each side and find the perimeter. STRAWS BUILD DRAW & FIND PERIMETER 1

12 Perimeter of Squares & Rectangles Grade 4 Test Maths Worksheet 7 2

13 Given the perimeter of a square, you can find the length of each side. Given the perimeter of a rectangle, and the length of one side of a rectangle, you can find the width. 3

14 Hands-On Activity Create 2 squares and 2 rectangles. Draw them on the grid below and colour in the shape. Write the measurements of each side. Then find both the area and the perimeter of each figure. 4

15 Area of Squares & Rectangles Grade 4 Test Maths Worksheet 8 Find the area of the square. Find the area of the rectangle. 5

16 Given the area of a square, you can find the length of a side. Find the side length of each square. Given the width and the area of a rectangle, you can find the length of a side. Find the length or width of each rectangle. 6

17 Name: Date: EP 4/ # Perimeter Activity Measure each side of the figure and round it off to the nearest whole number. Then add all the sides together to find its perimeter. Name Side 1 Side 2 Side 3 Side 4 Side 5 Side 6 TOTAL OR PERIMETER A B C D E F G Desk Mat Small Table Math Book 7

18 Area & Perimeter of Composite Figures Grade 4 Test Maths Worksheet 9 PERIMETER Find the perimeter of the composite figures below: 8

19 Hands-On Activity Create composite figures. Draw them on the grid below and colour in the shape. Write the measurements of each side. Then find both the area and the perimeter of each figure.

20 Area & Perimeter of Composite Figures AREA Find the area of the composite figures below: 9

21 Grade 4 Word Problems Test There is always a lot of work to do on the International Space Station. Maths Worksheet 10 See how math can help you get the job done. EXAMPLE While checking the solar arrays on the International Space Station after a recent storm, you found that several arrays were damaged. One array needs a new protective border around its perimeter. The array is a rectangle which is 34 m long and 12 m wide. How many meters of protective border will you need? Math Model Equation to solve (and working out) =? Sentence Answer They should order 92 meters of protective border. 1) You also found a big hole in one of the solar arrays. When you sent a message to Earth, they asked you to give them the area and dimensions of the rectangular panel. You know that it is 3 m long and 2 m wide. What is the area of this panel? Math Model Equation to solve (and working out) Sentence Answer 10

22 2) You have been asked to design a new Green House for the International Space Station. You make a rectangular garden of length 18 m and width 8m. You want to cover this rectangle with peat moss 1 cm deep. Find the area of the rectangle. Bonus: If 1 bag of peat moss can cover 9 m 2, how many bags of peat moss do you need to cover the whole rectangle? Math Model Equation to solve (and working out) Sentence Answer 3) Next you will put a stone path 2 m wide around your rectangular garden. You want to cover it with stones. Find the area of the path. Bonus: If 1 ton can cover 20m 2, how many tons will you need to cover your path? Math Model Equation to solve (and working out) Sentence Answer 11