View
176
Download
0
Category
Preview:
Citation preview
Lesson 14
“THE POWER OF TEN” MULTIPLICATION
Objectives
After this lesson, the students are expected to:
specializing skills in multiplication;
perform multiplication easily;
develop the speed in multiplying numbers.
Example:
31 x 100 = 3 100
270 x 10 = 2 700
15 000 x 100 = 1 500 000
Example:
2 380 x 40 = 95 200
2 380 x 400 = 952 000
When the factors are is in the power of ten such as 10, 100, 1000, 10
000, 100 000 and so on and so fort, just multiply the digit that is form 1 to 9
and add the number of zeros.
When the factors are end in both zero, multiply the significant number and
used the number of zeros in both factors to the product.
WORSHEET NO. 14
NAME: ___________________________________ DATE: _____________
YEAR & SECTION: ________________________ RATING: ___________
A. Based to the power of ten, multiply the following.
1. 100 x 320 =_________ 6. 75 x 100 =_________
2. 10 x 27 = __________ 7. 56 x 10 = __________
3. 100 x 414 = ________ 8. 38 x 100 =__________
4. 176 x 100 = ________ 9. 68 x 10 000 =________
5. 39 x 1 000 = ________ 10. 59 x 1 000 =________
B. Find the product of the following.
1. 2 080 x 30 =____________ 6. 720 x 40 =____________
2. 3 150 x 60 =____________ 7. 7 230 x 50 =___________
3. 1 470 x 20 =____________ 8. 2 030 x 60=___________
4. 30 x 90 =____________ 9. 456 x 70=____________
5. 30 x 80 =____________ 10. 86 x 690=____________
Recommended