⑴3.14×52×8﹣3.14×42×7.5 ⑵(+)÷ ⑶4.6×[1÷(2.1﹣2.08)]
1.25+75%=
840÷70=
0.8+ =
0.32=
1﹣ =
0.45÷4.5=
13÷ =
0.25× =
89×102=
﹣ + =
2.5+6=
0.12=
1-=
+=
1.5×20%=
328+199= 2.4+3.06= 24×12.5%= 4﹣﹣=
﹣= 3.2÷0.01= 3.5:1.4=﹣=
51×102 0.8××12.5 ×7÷×7
83.47﹣(23.47+11) 45×99+45 1÷2.5+2.5×0.8
结合统计图,回答下列问题: