Tính: a) 200 mm + 100 mm 300 mm – 100 mm 200 mm x 3 600 mm : 3
Giải thích
a)
200 mm + 100 mm = 300 mm
300 mm – 100 mm = 200 mm
200 mm x 3 = 600 mm
600 mm : 3 = 200 mm
b) 300 g + 200 g = 500 g
200g x 5 = 1 000g
500g – 300g = 200g
1 000g : 5 = 200g
c)
400 ml + 300 ml = 700 ml
800 ml : 4 = 200 ml
700 ml – 300 ml = 400 ml
200 ml x 4 = 800ml.