Hitunglah.
(1) 11 – 17 + 13
(2) -14 + 19 + 12 – 20
(3) -3,1 – 5,9
(4) -0,6 – (-1)
(5) (1/6) – (3/4)
(6) (-2/7) + (6/7) – (3/7)
Jawaban:
Matematika Kelas 7 Halaman 31, 32, 33 Operasi Penjumlahan Pengurangan Bilangan Bulat 2022
(1) 11 – 17 + 13 = 7
(2) {-14 + 19} + {12 – 20} = 5 + (-8) = -3
(3) -3,1 – 5,9 = -9
(4) -0,6 – (-1) = -0,6 + 1 = 0,4
(5) (1/6) – (3/4) = 2/12 – 9/12 = -7/12
(6) {(-2/7) + (6/7)} – (3/7) = 4/7 – 3/7 = 1/7
