Tính: a) 2 × 9 + 63=… b) 24 : 4 + 44 c) 5 × 6 − 12 =…d) 3 × 7 −16
Giải thích
a) 2 × 9 + 63 = 18 + 63 = 81
b) 24 : 4 + 44 = 6 + 44 = 50
c) 5 × 6 – 12 = 30 – 12 = 18
d) 3 × 7 – 16 = 21 – 16 = 5
a) 2 × 9 + 63 = 18 + 63 = 81
b) 24 : 4 + 44 = 6 + 44 = 50
c) 5 × 6 – 12 = 30 – 12 = 18
d) 3 × 7 – 16 = 21 – 16 = 5