Grade 4 Multiplication

Transcription

1 ID : ae-4-multiplication [1] Grade 4 Multiplication For more such worksheets visit Answer the questions (1) Farah earns Dhs25900 every month. How much money will she earn in 3 years? (2) A bag contains some pencils and erasers. There are 4 pencils and 2 times as many erasers as the number of pencils in the bag. How many erasers are there in the bag? (3) If a train travels 766 km in one hour, how far will it go in one day? (4) Find the product of following A) B) C) D) E) F) (5) Solve the following: A) 5910 x ( ) B) 6886 x ( ) (6) Find the product of following: A) B) C) D) (7) Abdul ordered 5 burgers, 7 salads, 6 pizzas, and 6 sandwiches. If the cost of burgers, salads, pizzas and sandwiches is Dhs16, Dhs23, Dhs20, and Dhs20 respectively, find the total amount Abdul paid to the shopkeeper. (8) How many minutes are there in 2 days? (9) An athlete eats 1 dozen guavas in a day. How many guavas will he eat in the month of November? (10) Givon celebrated his birthday with 10 of his friends. If he and each of his friends ate 2 slices of pizza, how many slices did Givon order? (11) How many minutes are there in the month of January?

2 ID : ae-4-multiplication [2] Choose correct answer(s) from the given choices (12) Which is the correct expression for 8 76? a. (8 6) + 70 b. (8 70) + 6 c. 8 (70 + 6) d (13) Which pair of numbers can complete this condition? 100 = a. 405 and 4500 c. 45 and 4500 b. 45 and 450 d. 450 and 4005 Fill in the blanks (14) Fill in the blanks: A) 62 (60 + ) = 4092 B) 67 (30 + ) = 2144 (15) Solve the following: A) 5 6 = B) 1 1 = C) 5 2 = D) 8 7 = E) 0 5 = F) 3 6 = 2017 Edugain ( All Rights Reserved Many more such worksheets can be generated at

3 Answers ID : ae-4-multiplication [3] (1) Dhs One year has 12 months. This means, 3 years have 3 times 12 months = 3 12 months = 36 months. The amount of money Farah will earn in 3 years = The amount of money she will earn in 36 months = The amount of money Farah earns in one month 36 = Dhs = Dhs (2) 8 According to the question, the total number of pencils in the bag = 4 We are also given that there are 2 times as many erasers as pencils in the bag. So, the number of erasers in the bag = 2 times the number of pencils = 2 number of pencils = 2 4 = 8 Hence, there are 8 erasers in the bag. (3) km. Given, the train travels 766 km in one hour. This means, the train will travel 24 times 766 km in one day, because we have 24 hours in a day. Therefore, the train will travel km = km in a day. (4) A) B) C) D) E) F)

4 (5) A) ID : ae-4-multiplication [4] Let us first evaluate what is inside the brackets: = 701 Now, the problem becomes 5910 x x 701 = B) Let us first evaluate what is inside the brackets: = 384 Now, the problem becomes 6886 x x 384 = (6) A) 1800 When we multiply 180 with 10, we simply put the number of zeros in 10 on the right hand side of 180. Hence, the answer is B) When we multiply 851 with 10000, we simply put the number of zeros in on the right hand side of 851. Hence, the answer is C) When we multiply 509 with 1000, we simply put the number of zeros in 1000 on the right hand side of 509. Hence, the answer is

5 D) 540 ID : ae-4-multiplication [5] When we multiply 54 with 10, we simply put the number of zeros in 10 on the right hand side of 54. Hence, the answer is 540. (7) Dhs481 Abdul ordered 5 burgers for Dhs16 each. Total money he paid for burgers = Cost of one burger Number of burgers ordered = Dhs16 5 = Dhs80 Abdul ordered 7 salads for Dhs23 each. Total money he paid for salads = Cost of one salad Number of salads ordered = Dhs23 7 = Dhs161 Abdul ordered 6 pizzas for Dhs20 each. Total money he paid for pizzas = Cost of one pizza Number of pizzas ordered = Dhs20 6 = Dhs120 Abdul ordered 6 sandwiches for Dhs20 each. Total money he paid for sandwiches = Cost of one sandwich Number of sandwiches ordered = Dhs20 6 = Dhs120 Step 5 Hence, the total amount Abdul paid to the shopkeeper = The amount paid for burgers + The amount paid for salads + The amount paid for pizzas + The amount paid for sandwiches = = 481

6 (8) 2880 ID : ae-4-multiplication [6] Let us first find the number of minutes in one day. We know that there are 60 minutes in one hour and 24 hours in one day. The number of minutes in one day = The number of minutes in one hour The number of hours in one day = minutes = 1440 minutes Now, we know the number of minutes in one day (1440 minutes). Let us find the number of minutes in 2 days. Step 5 Hence, the number of minutes in 2 days = The number of minutes in one day The number of days = = 2880 minutes (9) 360 One dozen guavas means 12 guavas. The athlete eats 1 dozen guavas in a day. This means that the number of guavas he eats in a day = 12 1 = 12 guavas We know that there are 30 days in the month of November. Hence, the number of guavas the athlete will eat in the month of November = The number of guavas he eats in one day The number of days in the month of November = = 360 guavas

7 (10) 22 ID : ae-4-multiplication [7] Total number of people who ate pizza slices = Number of Givon's friends + 1 (Givon himself) = = 11 Total number of slices eaten by each person = 2 Total number of slices eaten by Givon and his friends = Total number of people Total number of slices eaten by each person = 11 2 = 22 Hence, Givon had ordered 22 slices. (11) We know that there are 60 minutes in one hour and 24 hours in one day. The number of minutes in one day = The number of minutes in one hour The number of hours in one day = = 1440 minutes We also know that there are 31 days in the month of January. Hence, the number of minutes in the month of January = The number of minutes in one day The number of days in the month of January = = minutes

8 (12) c. 8 (70 + 6) ID : ae-4-multiplication [8] Here, we have to find the expression for We know, 76 = Replacing 76 by in the given expression: 8 76 = 8 (70 + 6) = (by using the distributive property of addition) We conclude that 8 76 can also be represented as 8 (70 + 6) and On observing the given options, we conclude that option c is the correct answer. (13) c. 45 and 4500 We will go by the options in the given question. Option a: = 4500, which does not match with the right hand side of the option. Option b: = 450, which does not match with the right hand side of the option. Option c: = 4500, which matches with the right hand side of the given option. Step 5 Option d: = 4005, which does not match with the right hand side of the option. Step 6 Hence, option c is correct.

9 ID : ae-4-multiplication [9] (14) A) 6 In the given question, we can see that 4092 is the product of two numbers: Multiplicand: 62 Multiplier: (60 + ) Here, we know the product and multiplicand, but the multiplier is not fully known. Remember, if we know the product and the multiplicand, the multiplier can be found by dividing the product by the multiplicand. So, the multiplier = = 66 Now we know: 60 + = 66 Here, we know the sum and one of the addends, but the second addend is not known. The other addend can be found by subtracting the known addend from the sum: Unknown addend = Sum - Known addend = = 6 Hence, the missing number is 6.

10 ID : ae-4-multiplication [10] B) 2 In the given question, we can see that 2144 is the product of two numbers: Multiplicand: 67 Multiplier: (30 + ) Here, we know the product and multiplicand, but the multiplier is not fully known. Remember, if we know the product and the multiplicand, the multiplier can be found by dividing the product by the multiplicand. So, the multiplier = = 32 Now we know: 30 + = 32 Here, we know the sum and one of the addends, but the second addend is not known. The other addend can be found by subtracting the known addend from the sum: Unknown addend = Sum - Known addend = = 2 Hence, the missing number is 2. (15) A) = 30. B) = 1. C) = 10.

11 ID : ae-4-multiplication [11] D) = 56. E) = 0. F) = 18.