Đáp án:
Giải thích các bước giải:
a. 3.52+15.22−26:23.52+15.22−26:2
=3.25+15.4−26:2=3.25+15.4−26:2
=75+60−13=75+60−13
=122=122
b. 53.2−100:4+23.553.2−100:4+23.5
=125.2−100:4+8.5=125.2−100:4+8.5
=250−25+40=250−25+40
=265=265
c. 62:9+50.2−33.362:9+50.2−33.3
=36:9+50.2−27.3=36:9+50.2−27.3
=4+100−81=4+100−81
=23=23
d. 32.5+23.10−81:332.5+23.10−81:3
=9.5+8.10−81:3=9.5+8.10−81:3
=45+80−27=45+80−27
=98=98
e. 513:510−25.22513:510−25.22
=53−25.4=53−25.4
=125−100=125−100
=25=25
f. 20:22+59:5820:22+59:58
=20:4+5=20:4+5
=5+5=10