<h2>22*3 = (20+2)*3=20*3+2*3=60+6=66</h2><h2>34*2=(30+4)*2=30*2+4*2=60+8=68</h2><h2>33*3=(30+3)*3=30*3+3*3=90+9=99</h2><h2>25*3=(20+5)*3=20*3+5*3=60+15=75</h2><h2>28*3=(20+8)*3=20*3+8*3=60+24=84</h2><h2>33*2=(30+3)*2=30*2+3*2=60+6=66</h2><h2>23*3=(20+3)*3=20*3+3*3=60+9=69</h2><h2>42*5=(40+2)*5=40*5+2*5=200+10=210</h2><h2>43*2=(40+3)*2=40*2+3*2=80+6=86</h2><h2>24*3=(20+4)*3=20*3+4*3=60+12=72</h2><h2>31*4=(30+1)*4=30*4+1*4=120+4=124</h2><h2>36*3=(30+6)*3=30*3+6*3=90+18=108</h2>
1 день 150-40-50=60 60л остат, 2день60+90=150 ,150-70=80-20=60 л после обеда , 3 день 20+130=150,
150-80=70 70-30=40 до обеда
(387 + 543) - 456 • 23 = 930 - 10488 = - 9558
77 : 11 + 678 : 2 = 7/11 + 339 = 3736/11 = 339,636
381 - 210 + 540 : 5 = 381 - 210 + 108 = 279