Multiplication 1 digit by 3 digit
3 x 454
1,362
9 x 1,235 =
11,115
13 x 62 =
806
What are the partial products of 13 x 23?
9, 30, 60, 200
7x7
49
3 x 126 =
378
Use Area Model to find the product of 1,092 x 8.
8,736
19 x 52 =
988
What are the partial products of 14 x 21?
4, 10, 80, 200
7 x 6
42
Use the area model to find the product of 9 x 876.
7,884
Use Partial Products to find the product of 1,990 x 2.
3,980
34 x 30
1,020
The Castillo de San Marcos is a Spanish fortress that was built between 1672 and 1695. It cost 138,375 pesos to build this fortress.
1. How many years did it take to build the fortress?
2. Rounded to the nearest ten thousand, how many pesos did it cost to build the fortress?
1. 23 years
2. 140,000 pesos
Use the partial products to find the product 4 x 997.
8,973
6 x 2,347 =
14,082
14 x 22
308
Don works 18 hours a week. Which expression shows a good way to use rounding to estimate how many hours Don will work in 52 weeks?
a. 10 x 50
b. 10 x 60
c. 20 x 50
d. 18 x 60
c. 20 x 50
56
Which are the partial products for 7 x 228?
a.1,400, 144 and 56
b.14,000, 140 and 56
c. 56, 14 and 1,400
d. 56, 140 and 1,400
c. 56, 140 and 1,400
Which are the correct partial products of 3 x 3,672?
a. 6; 21; 1,800; 9,000
b. 9,000; 1,800; 210; 6
c. 210; 1,800; 9,000
d. 6;210; 180; 9,000
b. 9,000; 1,800; 210; 6
The product of two factors is 2,000. One of the factors is 50. What is the other factor?
a.20
b.40
c.200
d.400
b. 40
Find the missing factor. 20 x ___ = 420
21
12 x 12
144