Question

(1,75 * 25+1,75:1)*1 57

2+1 411 * 0,22:0,01

Answer 1

(1,75 * 25+1,75:1)*1 57 = 4,2

1) 1,75 * 25 = 1 3/4 · 2/5 = 7/4 · 2/5 = 7/10 = 0,7

2) 1,75:1= 1,75

3) 0,7 + 1,75 = 2,45

4) 2,45 ·1 5/7 = 2 9/20 ·1 5/7 = 49/20 · 12/7 = 42/10 = 4,2

 

2+1 411 * 0,22:0,01 = 32

1) 1 411 * 0,22 = 15/11 ·11/50 = 3/10

2)3/10 : 1/100 = 30

3) 2 + 30 = 32