Listen to and read Vigdis’ impressions. Find the words that have been changed. Underline them. How many words have you found? (listening for specific information)

23.6+14.5-30.1-6.8-1.9=-0.7

1) 14,5-30,1=-15,6
2) 6,8+1,9=8,7
3) 23,6+(-15,6)=23,6-15,6=8
4) 8-(+8,7)=-0,7
ответ: -0,7