Soal dan Jawaban Penjumlahan dan Pengurangan Bilangan Positif Negatif

KOMPAS.com – Bilangan bulat positif dan negatif dapat mengalami operasi perhitungan penjumlahan dan pengurangan. Berikut adalah contoh soal penjumlahan serta pengurangan bilangan bulat positif dan negatif beserta jawabannya!

• Contoh soal 1

Hitunglah.

1. (+5) + (-18) + (-5)
2. (-9) – (-8) + (-4)
3. 2 – 7
4. -4 – 5
5. -2 + 10 – 5
6. 3 – 7 – 4 + 8
7. 16 – (+17) – 13
8. (-3) + 6 + (-7) – (-9)

Jawaban:

1. (+5) + (-18) + (-5) = 5 – 18 – 5 = -18
2. (-9) – (-8) + (-4) = -9 + 8 – 4 = -1 – 4 = -5
3. 2 – 7 = -5
4. -4 – 5 = (-4) + (-5) = -9
5. -2 + 10 – 5 =  8 – 5 = 3
6. 3 – 7 – 4 + 8 = -4 – 4 + 8 = -8 + 8 = 0
7. 16 – (+17) – 13 = 16 – 17 – 13= -1 – 13 = -14
8. (-3) + 6 + (-7) – (-9) = -3 + 6 – 7 + 9 = 3 – 7 + 9 = -4 + 9 = 5

Baca juga: Soal dan Jawaban Perkalian juga Pembagian Bilangan Positif dan Negatif

• Contoh soal 2

Hitungan dengan penjumlahan dan pengurangan.

1. (-3) + (+2) – (+5)
2. (+6) – (-7) + (-13)
3. (-6) – (+1) + (-3) – (-8)
4. 3 – 8
5. -6 + 9
6. -7 – 4
7. -18 + 18
8. 5 – 19
9. -2 + 6 – 8
10. 7 – 9 – 5
11. 4 – 7 + 10 – 1
12. -12 + 4 – 3 + 7

Jawaban:

1. (-3) + (+2) – (+5) = -3 + 2 – 5 = -1 – 5 = -6
2. (+6) – (-7) + (-13) = 6 + 7 – 13 = 13 – 13 = 0
3. (-6) – (+1) + (-3) – (-8) = -6 – 1 – 3 + 8 = -7 – 3 + 8 = -10 + 8 = -2
4. 3 – 8 = -5
5. -6 + 9 = 3
6. -7 – 4 = - 11
7. -18 + 18 = 0
8. 5 – 19 = -14
9. -2 + 6 – 8 = 4 – 8 = -4
10. 7 – 9 – 5 = -2 – 5 = -7
11. 4 – 7 + 10 – 1 = -3 + 10 – 1 = 7 – 1 = 6
12.  -12 + 4 – 3 + 7 = -8 – 3 + 7 = -11 + 7 = -4

Baca juga: Soal dan Jawaban Pengurangan Bilangan Bulat

• Contoh soal 3

Hitunglah.

1. -3 + (-2) – (-9)
2. 8 – (+7) – 5
3. -2 – (-3) + 7 + (-4)
4. 3 + (-8) – (-5) – 1

Jawaban:

1. -3 + (-2) – (-9) = -3 – 2 + 9 = -5 + 9 = 4
2. 8 – (+7) – 5 = 8 – 7 – 5 = 1 – 5 = -4
3. -2 – (-3) + 7 + (-4) = -2 + 3 + 7 – 4 = 1 + 7 – 4 = 8 – 4 = 4
4. 3 + (-8) – (-5) – 1 = 3 – 8 + 5 – 1 = -5 + 5 – 1 = -1

Baca juga: Soal dan Jawaban Penjumlahan dan Pengurangan Bentuk Suku Banyak

• Contoh soal 4

Ubahlah pernyataan-pernyataan berikut ini menjadi kalimat penjumlahan saja. Sebutkan suku-suku positif dan negatifnya.

1. (+4) – (-3)
2. (+7) – (+2)
3. (-9) + (-4) – (-6)
4. (-5) – (-3) – (-8)

Jawaban:

1. (+4) – (-3) = 4 + 3
   Suku positif +4 dan +3.
2. (+7) – (+2) = (+7) + (-2)
   Suku positif +7, suku negatif -2.
3. (-9) + (-4) – (-6) = (-9) + (-4) + (+6)
   Suku positif +6, suku negatif -9 dan -4.
4. (-5) – (-3) – (-8) = (-5) + (+3) + (+8)
   Suku positif +3 dan + 8, suku negatif -5.