6. lesson 5 multiplication of whole numbers
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This document provides instructions on how to multiply whole numbers. It explains that multiplication is repeated addition and shows how to multiply one-digit and two-digit numbers. It also gives tips for multiplying by 10, 100, 1,000 and multiples of 10. Examples are provided to illustrate rounding off products and solving word problems using the multiplication operation. Key steps in the multiplication process are outlined along with examples to demonstrate multiplying various quantities.
6. lesson 5 multiplication of whole numbers
- 1. By John Rome R. Aranas MULTIPLICATION OF WHOLE NUMBERS
- 2. MULTIPLICATION Multiplication is also known as REPEATED ADDITION.
- 3. How to Multiply? For 1-digit multiplier: For 2-digit multiplier: 325 6 1,950 31 124 73 372 +8,680 9,052
- 4. Multiplication Made Easy! 1) For multiplying 10, 100, and 1,000 Just add: 1 zero for 10; 2 zeroes for 100, and; 3 zeroes for 1,000 Ex. 2,329 100 = 232,900
- 5. Multiplication Made Easy! More examples 494 100 = 49,400 291,584 10 = 2,915,840 829,395 1,000 = 829,395,000
- 6. Multiplication Made Easy! 2) For multiplying multiples of 10 Ex. 456,000 20 = - Remove the zeroes at the end first. 456 2 = - Multiply 456 2 = 912
- 7. Multiplication Made Easy! - Then, add the zeroes removed. 9,120,000 More examples: 290 90 = 26,100 439,290 30 = 13,178,700 8,300 400 = 3,320,000
- 8. Multiplication Made Easy! 3) For Rounding-off Products: - Round-off each factor to the nearest place value 592 34 600 30
- 9. Multiplication Made Easy! - Multiply - Therefore, 18,000 is the REASONABLE ANSWER to the given equation. 600 30 18,000
- 10. Multiplication Made Easy! Give the REASONABLE ANSWER in the following equations: 627 32 = 7,473 25 = 564,394 43 =
- 11. Word Problems For Multiplication: Times Every At this rateAs many as Doubled (x2) Tripled (x3) Product Squared (raised to two) Cubed (raised to three)
- 12. Example Yosh was able to harvest 45 sacks of rice in his farm. If each sack of rice weighs 50 kilograms, find the total weight of rice he harvested.
- 13. ESA Method E: 45 50 = S: 45 50 00 +2,250 2,250 A: 2,250 kilograms 45 5 225 ≠, 2,250 or
- 14. Example Breil bought 32 packs of chocolate. Each pack contains 15 chocolate bars. How many bars of chocolate did he buy?
- 15. ESA Method E: 32 15 = S: 32 15 160 + 320 480 A: 480 chocolate bars
- 16. Try this! Bea treated the class with 23 boxes of pizza. If each box of pizza has 6 slices, how many slices of pizza were there altogether?