HOMEWORK – due 3-7
Double Digit Multiplication
Name: _______________ # _____ HR ____
Solve using the distributive method:
Sample:
35
x 27
1)
93
x 27
___ x 7 = _______
30 x 7 = 210
5 x 7 = 35
8 x 6 = _______
3 x 7 = _______
30 x 20 = 600
50 x 30= _______
___ x 20= _______
5 x 20 = 100
8 x 30= _______
3 x ___= _______
Sum of partial
210 +35 + 600 + 100 =
products:
945
Sum of partial
____________
3)
4)
________ = _______
________ = _______
45
x 13
________ = _______
________= _______
________= _______
Solve using the matrix model:
________= _______
________= _______
6)
5
600
100
210
35
810
135
20
700
245
62 x 25 = _________
60
2
____________
5)
75
x 42
________ = _______
________ = _______
________= _______
________= _______
____________
____________
Sample: 35 x 27 = __945_
30
products:
83
x 12
________ = _______
____________
8)
2)
58
x 36
50 x 6 = _______
Sum of partial products:
20
7
Date___________
7)
59 x 18 = _________
5
945
36 x 42 = __________
9)
89 x 54 = _________
10) 72 x 38 = _________
Solve these problems:
1. Place the following fractions on the number line below.
5 1 7 5 1
, , , ,
6 4 8 8 10
_____________________________________________________
1
2
0
1
2. You have 5 books and read 3 of them. What fraction of your books did you read? Explain your thinking. Write
the fraction name and draw a diagram to represent the fraction.
The shaded books are the books you have read.
3. You have 12 pet rocks and paint
1
4
of them. How many rocks do you paint? Explain your thinking. Show which
pet rocks you painted below.
4. Explain the meaning of each digit in this number: $3.33
5. Tran ate
3
4
of her pizza and Tung ate
3
4
of his pizza. Tung said that he ate more pizza than Tran. Explain how
Tung could be right by using diagrams and words.
6. My dog is 5 ½ years old. My cat is 4 years younger than my dog. How old is my cat?