58+27= 76-43= 60-29=
52+46= 47+33= 59-50=
26+28+45= 86-38-24= 74-47+46=
64+26-37= 83-(28+45)= 41+(52-13)=
52+3425+43 60-1560-51
36+23= 45+27= 36+64=
78-26= 62-33= 50-39=
25+17+48= 81-36-22= 37+43-35=
45+8= 26+47= 92-7=
29+15= 64-27= 35+63=
54+35= 28+49= 62-27=
82-37= 85-32= 46+24=
90-54= 38+44= 70-7=
29+26= 56-33= 53-45=
①58+29=
②71-32=
③64+18=
④48+52=
⑤90-76=
⑥72-18=
算式:
图意:
答:儿童口罩比成人口罩多( )盒
答:一共买了( )盒口罩