Bài 2 trang 165 SGK Toán 5

Tính: 

a) 2,5% + 10,34% ;

b) 56,9% - 34,25% ;

c) 100% - 23% - 47,5%.

Lời giải

a) 2,5% + 10,34%  = 12,84% ;

b) 56,9% - 34,25% = 22,65% ;

c) 100% - 23% - 47,5% = 77% - 47,5% = 29,5%.


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