Tính:a) 35 kg + 28 kg 72 kg – 15 kg 2 kg × 10 15 kg : 5b) 76 l + 15 l 85 l – 27 l 2 l × 8 30 l : 5c) 7 km + 3 km 35 m – 8 m 5 cm × 4 20 dm :...
Đọc tiếp
Tính:
a) 35 kg + 28 kg 72 kg – 15 kg 2 kg × 10 15 kg : 5
b) 76 l + 15 l 85 l – 27 l 2 l × 8 30 l : 5
c) 7 km + 3 km 35 m – 8 m 5 cm × 4 20 dm : 5
35 kg + 28 kg = 63 kg 72 kg – 15 kg = 57 kg
2 kg × 10 = 20 kg 15 kg : 5 = 3 kg
b) 76
+ 15 
= 91 
85 
– 27 
= 58 
2
× 8 = 16 
30 
: 5 = 6 
c) 7 km + 3 km = 10 km 35 m – 8 m = 27 m
5 cm × 4 = 20 cm 20 dm : 5 = 4 dm