Tính a) 3 mm + 13 mm = ................. 13mm ´ 2 = ...............
Giải thích
a) 3mm + 13 mm = 16mm13mm 2 = 26mm
b) 356g + 400g = 756g600g : 2 = 300g
c) 63ml : 7 + 159ml
= 9ml + 159ml
= 168ml42ml : 2 + 348ml
= 21ml + 348ml
= 369ml
a) 3mm + 13 mm = 16mm13mm 2 = 26mm
b) 356g + 400g = 756g600g : 2 = 300g
c) 63ml : 7 + 159ml
= 9ml + 159ml
= 168ml42ml : 2 + 348ml
= 21ml + 348ml
= 369ml