Question

Sper sa va descurcati Multumesc!

Answer 1

3•1/2 + 5•3/4= 3/2 + 15/4=6+15/4= 21/4

Answer 2

1. 400+100-1+1=500-1+1=499+1=500

2. 20/100×40=80/10=8

3.456012×[10-5×(28-26)]=456012×[10-5×2]=456012×1=456012

4. nu stiu sa il fac, scuze

5. 850-825=25

6. (32×3):24=96:24=4

7. 34+32+42=66+42=108

8. 31/15+8/15=39/15=13/5

9. 25/2+53/2=78/2=39

10.3/15-2/15=1/15

11. 3 intregi 1/2+5 întregi 3/4=7/2+23/4 (amplificãm 7/2 cu 2) = 14+23/4=37/4