Name
Date
Unit 3 Bonus #3 (last one!): There are several division methods
that we have covered in class. Use whichever one you wish to get
the correct answer, but try to use the methods below.
Lesson 8: Dividing a 3-Digit Number by a 1-Digit Number
1. Use Base Ten Blocks to find 424 ÷ 4. ______________
2. Divide.
a) 466 ÷ 2 = _______
b) 635 ÷ 2 = _______ c) 810 ÷ 2 = _______
d) 900 ÷ 2 = _______
e) 842 ÷ 2 = _______ f) 407 ÷ 2 = ______
Before you divide by 2, how can you tell if there will be a remainder?
__________________________________________________________
3. Use repeated subtraction to divide.
a) 540 ÷ 9 = _______
b) 720 ÷ 8 = _______ c) 470 ÷ 7 = _______
4. Divide.
a) 286 ÷ 2 = _______
b) 373 ÷ 4 = _______ c) 815 ÷ 5 = _______
d) 9 738 = _______
e) 7 815 = _______ f) 6 932 = _______
5. Sarah is making packages of 6 pencil crayons.
She has 710 pencil crayons.
How many packages of pencil crayons can Sydney make? _______
6. Six buses will carry students on the end of year trip.
There are 246 students on the trip.
How many students are on each bus? _______
7. Suppose you divide a 3-digit number by a 1-digit number.
You have a remainder of 8.
Which number are you dividing by? _______
8. How can you tell, without dividing, that the quotient of 459 ÷ 3
has 3 digits?
__________________________________________________________
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Name
Date
ANSWER SHEET for Unit 3 Bonus #3
1. 106
2. a) 233
b) 317 R1
c) 405
d) 450
e) 421
f) 203 R1
If the dividend is odd, there will be a remainder of 1.
3. a) 60
b) 90
c) 67 R1
4. a) 143
b) 93 R1
c) 163
d) 82
e) 116 R3
f) 155 R2
5. a) 118 packages; there will be 2 crayons left over.
6. 41 students
7. 9
8. 459 is greater than 300, and 3 × 100 = 300, so the quotient will be greater than 100, so it will have 3 digits.
How do you do it?
Questions 1: For Base-10 blocks, you’d have to split the two 10-unit sticks into two so you have four
5-unit pieces. That way, you can now take away one of each type (1 x 100, 1 x 5 and 1 unit) You’ll
then have…
100 + 5 + 1 = 106
Question 2: Whenever you divide by two, you’re cutting the dividend in half. Here’s one way:
466 ÷ 2 
400 ÷ 2 =
+ 66 ÷ 2 =
200
+ 33
233
Question 3: Repeated subtraction (is kind of like long division, but you do the answer in pieces):
________
9 ) 540
| 10 (You can pick 10 because multiplying by 10 is easy)
- 90
|
450 | 10 (You did it already, so why do do it again?)
- 90
|
360 | + 40 (You remember that 4 x 9 = 36, so 40 x 9 = 360)
- 360 |
0 | 60 (You add all the divisors because you’re done subtracting!)
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