Singapore Math Level 3A & 3B – Unit 7: Dividing Numbers - 25 Questions
Unit 7: DIVIDING NUMBERS
Unit 7 of Level 3A in Singapore Math, titled Dividing Numbers, covers the following topics: (a) solving division problems, (b) understanding odd and even numbers, and (c) solving story problems. Let's work through each of these step by step.
Q(1-15): Solve the following division problems. Show your work.
1. 7)67
2. 5)17
3. 3)25
4. 9)88
5. 4)29
6. 6)52
7. 2)469
8. 5)90
9. 3)84
10. 8)792
11. 7)637
12. 6)138
13. 3)702
14. 9)972
15. 4)812
Solution(1-15):
The solution process for dividing numbers from 1 to 15 is shown in the figure below. The top number in each process is called the quotient, and the bottom number is called the remainder. Let's examine the solution.
16. Beatriz is buying a birthday gift for his sister. Solve the division problems to find out what the gift is.
M: 2)17 R: 6)43
E: 8)55 A: 4)38
C: 7)60
Beatriz’s birthday present for his sister is a:
8R4 9R2 8R1 6R7 7R1 9R2
[Note: Here, the number before "R" indicates the quotient, and the number after "R" indicates the remainder, actually R means remainder of dividing numbers.]
Solution(16):
Find the solution in the picture below:
17. Solve the following division problems. Answer the question that follows.
R: 22÷2= S: 48÷2=
M: 39÷3= H: 48÷4=
O: 20÷2= U: 64÷2=
What kind of room has no door?
13 32 24 12 11 10 10 13
Solution(17):
R: 22÷2=11 S: 48÷2=24
M: 39÷3=13 H: 48÷4=12
O: 20÷2=10 U: 64÷2=32
Process:
M/13 U/32 S/24 H/12 R/11 O/10 O/10 M/13
So, a MUSHROOM has no door.
18. (a) List all the odd numbers from 1 to 9.
(b) List all the even numbers from 1 to 9.
Solution(a&b):
(a) 1,3,5,7,9
(b) 2,4,6,8
19. List all the even numbers from the given numbers below.
33, 48, 56, 97, 45, 16, 74, 82, 20
Solution(19):
48, 56, 16, 74, 82, 20
20. List all the odd numbers from the given numbers below..
11, 8, 65, 83, 37, 20, 49, 7, 91, 52
Answer(20):
11, 65, 83, 37, 49, 7, 91
21. What is the largest even number you can make using the following digits?
3, 0, 9, and 7.
Solution(21):
9 > 7 > 3 > 0
The largest number = 9730, and it is a even number.
22. Make the smallest odd number by using the digits 4, 1, 5, and 2.
Solution(22):
1 < 2 < 4 < 5
The smallest number = 1245, and it is a odd number.
Solve the following word problems. Show your work in the space below.
23. Bryan bought 6 packets of needle. He had 426 needles altogether. How many needles were there in each packet?
Solution(23):
426 ÷ 6 = 71
There were 71 needles in each packet.
24. Jumla used 958 tires in January. If each car used 4 tires, how many cars did Jumla manufacture in January?
Solution24:
958 ÷ 4 = 239 R 2
Jumla manufactured 239 cars in January.
25. John bakes 167 mini muffins. He gives all the muffins to his friends. Each friend gets 5 mini muffins.
(a) How many friends does he have in her class?
(b) How many muffins does he have left?
Solution(a&b-25):
167 ÷ 5 = 33 R 2
(a) He has 33 friends in his class.
(b) He has 2 mini muffins left.
Also: