
Matematika
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•
Mathematics
•
5th Grade
•
Hard
Erika Febrianti
Used 31+ times
FREE Resource
7 Slides • 5 Questions
1
By Erika Febrianti
PENJUMLAHAN DAN PENGURANGAN BILANGAN POSITIF DAN NEGATIF
2
Bilangan bulat merupakan kumpulan bilangan yang terdiri dari nol, bilangan asli, dan lawan bilangan asli. Pada bilangan bulat, bilangan asli disebut bilangan positif, sedangkan lawan bilangan asli disebut bilangan negatif. Perhatikan gambar berikut :
Bilangan Bulat
3
Penjumlahan Bilangan bulat
· Jika (+) + (+) = (+)
Contoh : 2 + 5 = 7
Jika (-) + (-) = (-)
Contoh : (-5) + (-6) = (-10)
Jika (+) + (-) = bisa (+) , bisa juga (-)
Jika (-) + (+) = bisa (+) , bisa juga (-)
Caranya : bilangan yang besar dikurangi bilangan yang kecil
Jika (+) lebih besar maka hasilnya (+)
Jika (-) lebih besar maka haislnya (-)
Contoh : 8 + (-3) = 5 (-9) + 4 = (-5)
3 + (-8) = (-5) (-4) + 10 = 6
4
Pengurangan Bilangan Bulat
Jika (+) – (+) = bisa (+) , bisa juga (-)
Jika bilangan pertama lebih besar maka hasilnya (+)
Jika bilangan kedua lebih besar maka hasinya (-)
Contoh : 6 – 2 = 4
6 – 8 = -2
Jika (-) – (-) = bisa (+) , bisa juga (-)
Jika bilangan pertama lebih besar maka hasilnya (-)
Jika bilangan kedua lebih besar maka hasilnya (+)
Contoh : (-5) – (-3) = -5 + 3 = (-2)
(-5) – (-8) = -5 + 8 = 3
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Pengurangan Bilangan Bulat
Jika (+) – (-) = (+)
Contoh : 7 – (-5) = 7 + 5 = 12
Jika (-) – (+) = (-)
Contoh : (-4) – 9 = - 13
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7
Siap kuis hari ini
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Fill in the Blank
(-5) + 8 = ...
9
Multiple Choice
12 + (-20 ) = ....
8
-8
32
-32
10
Multiple Choice
(-6) - (-15) = ...
-9
9
21
-21
11
Multiple Choice
(- 8) - 12 = ...
4
-4
20
-20
12
Fill in the Blank
(-15) + (-25) = ....
By Erika Febrianti
PENJUMLAHAN DAN PENGURANGAN BILANGAN POSITIF DAN NEGATIF
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