Commutative Associative And Distributive Properties Of Numbers Sifatsifat
Commutative, Associative And Distributive Properties Of Numbers Sifat-sifat operasi hitung bilangan (komutatif, Asosiatif dan Distributif) Created by Mr. Made Nuryadi
OBJECTIVES The students will be able to: 1. Understand the communicative, distributive and associative properties of numbers 2. Apply to use of numbers count operation. 3. Apply to use to solve problems
Commutative Pertukaran Is it the same? + = + 2 3 3 2 5 = 5 Samakah hasil dari 4+5 dan 5+4 Apa kesimpulan mu tentang sifat komutatif pada penjumlahan? ? ?
SIFAT KOMUTATIF PADA PERKALIAN Apakah sifat komutatif berlaku pada perkalian? ? ? Apakah 26 x 4 sama dengan 4 x 26? Ex: 26 x 4 = 4 x 26 104 = 104 Apakah sama 12 x 15 dan 15 x 12 ? Apa kesimpulanmu?
Can we use commutative property in subtraction? Please check it by yourself!!!! What is your conclusion? ? ? Sorry ya… Sifat komutatif tidak berlaku pada pengurangan
Solve these problems Find the missing numbers 1. 7+5 = …. +7 7. 8 x 2 =…. . x… 2. 9+27 =27+…. 8. 9 + 3=…. . +…. 3. 16+…=12+…. 4. 12 x 5 = 5 x…. 5. …x 7 =…. x 10 6. 6 x…. = 12 x 6
ASSOCIATIF Assosiatif (pengelompokan) Associative property to addition is it the (3+4)+8 equal to 3 +(4+8)? (3+4)+8 =15 3 +(4+8)=15 Associative property to multiplication Apakah berlaku? ? ? Let’s check!!!
Why do you study communicative and associative? Commutative and associative make easier to solve problems Ex: Find the value of 25 x 52 x 4=…. Let’s check! 25 x 52 x 4= 25 x 4 x 52 sifat komutatif = (25 x 4)x 52 sifat assosiatif = 100 x 52 =5200 l
Practice 2 a. b. c. d. e. Use commutative and associative properties to solve these problems! 2 x 35 x 500=…… 25 x 279 x 4 =…… 125 x 136 x 8 =…… 20 x 265 x 50=……. 4 x 18 x 25 =……
Distributive Penyebaran If there are three numbers a, b, c with the form (a x b) + (a x c), we can make simple. (a x b)+(a x c)= a x (b +c) Ex: (4 x 12)+(4 x 8) = 4 x (12 + 8) = 4 x 20 = 80
Let’s practice!!! a. b. c. Find the value of these problems by using commutative, associative or distributive properties! (71 x 28) + (72 x 71)=……. (113 x 12) – (12 x 13) =…. . (256 x 175) + ( 25 x 256)=…….
Quiz q q q Tunjukkan sifat asosiatif pada operasi penjumlahan menggunakan bilangan 4, 5, dan 8. Selesaikanlah dengan menggunakan gabungan sifat komutatif dan asosiatif: 4 x 125 x 25 Selesaikan dengan menggunakan sifat distributif: a. (116 x 13) + (84 x 13) b. (17 x 225) – ( 17 x 125)
Thanks “If you can dream it, you can do it”
- Slides: 15