multiplication
DESCRIPTION
Multiplication. Properties 100 points. 3 x 0 = 0. Properties 100 points. Zero Property. Properties 200 points. 3 x 4 = 4 x 3. Properties 200 points. Commutative Property. Properties 300 points. ( 3 x 5) x 6= 3 x ( 5x 6). Poperties 300 points. Associative Property of Multiplication. - PowerPoint PPT PresentationTRANSCRIPT
Properties Estimation 2 digit by 2 digit
3 digit by 2 digit Word Up!
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
Properties100 points
3 x 0 = 0
Properties 100 points
Zero Property
Properties 200 points
3 x 4 = 4 x 3
Properties 200 points
Commutative Property
Properties 300 points
( 3 x 5) x 6= 3 x ( 5x 6)
Poperties 300 points
•Associative Property of Multiplication
Properties 400 points
8 x 1 = 8
Properties 400 points
• Identity Property
Properties 500
( 6 x 1) x 0 = 6 x (1 x 0)
Properties 500
Associative Property of Multiplication
Estimation 100 points
36 x 27 = ?
Estimation 100 points
36 x 27 = ? 40 x 30 = 1200
Estimation 200 points
214 x 99 = ?
Estimation 200 points
214 x 99 = ?200 x 100 = 20,000
Estimation 300 points
56 x 4 = ?
Estimation 300
56 x 4 = ?60 x 4 = 240
Estimation 400 points
405 x 67 = ?
Estimation400 points
405 x 67 = ?400 x 70 = 28, 000
Estimation 500 points
985 x 7 = ?
Estimation 500 points
985 x 7 = ?1000 x 10= 10,000
2 by 2 100
44 x 23 = ?
2 by 2 100 points
1012
2 by 2 200 points
72 x 51 = ?
2 by 2200 points
3,672
2 by 2 300 points
19 x 15 = ?
2 by 2300 points
285
2 by 2400 points
81 x 11 = ?
2 by 2400 points
891
2 by 2 500 points
25 x 31 = ?
2 by 2500 points
775
3 by 2100 points
451 X 10 = ?
3 by 2100 points
4510
3 by 2200 points
132 x 47 = ?
3 by 2200 points
6,204
3 by 2300 points
901 x 62 = ?
3 by 2300 points
55,862
3 by 2400 points
515 x 35 = ?
3 by 2400 points
18,025
3 by 2500 points
236 x 46 = ?
3 by 2500 points
10,856
Word Up 100 points
The fifth grade at Saint Pius X School sold more popcorn than any other class. Their order was for 17 cases of popcorn. Each case held 242 bags of popcorn. How many bags were sold by the fifth grade?
Word Up 100 points
The fifth grade class sold 4,114 bags of popcorn.
Word Up 200 points
Is 3,198 a reasonable product for 727 x 44?Why or why not?
Word Up 200 points
No, because if estimated the product would be 28,000.
727 x 44 =?700 x 40= 28,000
Word Up 300 points
There are 18 classrooms at Saint Pius X School Each classroom holds about 25 students. What is an estimate of the number of students at Saint Pius X School?
Word Up 300 points
An estimate of the number of students at Saint Pius X School would be about 600 students.20 x 30= 600
Word Up 400 points
Mrs. Dates is buying 3 computers at the cost of $900 for each computer. If she buys them on credit and pays $98 per month will she have paid for all of the computers at the end of 12 months?
Word Up 400 points
The total cost of the computers is $2,700. If bought on credit at the end of 12 months Mrs. Dates will have paid $1,176. The computers will not be paid in full at the end of one year.
It will take about 28 months or more than 2 years to pay for the computers if bought on credit.
Word Up 500 points
Kiran helped his father clean the garage this weekend. If Kiran took eight 15 minute breaks, how much time did he spend on breaks?
Word Up 500 points
• 8 x 15 = 120• Kiran spent 120 minutes on breaks or 2 hours.