HOMEWORK – due 2-28
Double Digit Multiplication
Name: _______________ # _____ HR ____
Solve using the distributive method:
Sample:
35
x 27
1)
5 x 7 = 35
8 x 6 = _______
3 x 7 = _______
30 x 20 = 600
40 x 20= _______
60 x 10= _______
5 x 20 = 100
8 x 20= _______
3 x 10= _______
210 +35 + 600 + 100 =
products:
945
92
x 34
90 x 4 = _______
2 x 4 = _______
90 x 30= _______
2 x 30= _______
Sum of partial
products:
____________
Solve using the matrix model:
Sum of partial
____________
4)
8)
30
600
5
100
700
210
35
245
810
135
945
95 x 32 = __________
90
5
products:
57
x 41
50 x 1 = _______
5)
Sum of partial
products:
6)
____________
67 x 24 = _________
60
7
0 x 50= _______
Sum of partial
products:
7)
20
10
4
8
9)
65 x 29 = _________
80
x 59
80 x 9 = _______
80 x 50= _______
50 x 40= _______
7 x 40= _______
____________
0 x 9 = _______
7 x 1 = _______
Sample: 35 x 27 = __945_
7
63
x 17
60 x 7 = _______
30 x 7 = 210
Sum of partial
20
2)
48
x 26
40 x 6 = _______
Sum of partial products:
3)
Date___________
____________
42 x 18 = _________
40
2
10) 86 x 37 = _________
Solve these problems:
1) Jennifer’s puppy, Buckle, was growing up so quickly. Buckle weighed 8 pounds when he
was 7 weeks old. He weighed 12 pounds when he was 14 weeks old. Which logical predictions
can you make about Buckle when he is 6 months old?
a) Buckle will be heavier.
b) Buckle will be meaner.
c) Buckle will be cuter.
d) Buckle will be taller.
2) What do the models show?
A. 2/5 < 4/8
B. 2/4 > 5/8
C. 2/4 < 5/8
D. 2/5 < 5/8
3) How long is the pencil, in inches?
A.
B.
C.
D.
4
3
4
5
1/4 in.
3/8 in.
1/8 in.
1/4 in.
How many products were sold
in the third month? _______
How many products were sold in
the last 3 months? ________
How many more products were
sold during the last 2 months than
during the first 2 months? _______
Number of Products Sold
4) Katie owns a beauty shop. She has been keeping track of how many products she sold
over the last 6 months. She sold 25 products in the first month. She sold 75 products in the
second month.