题目内容
【题目】口算:
26.26÷26= 4.57+6.43= 7.9×11﹣7.9= 3.14×32=
3+﹣3+= 0.1×30%= 2÷1%﹣2= ÷=
1.8×4×0.5= 1.5﹣1.5×0.3= 5.7+4.3= 1﹣25%=
18×= ×= 3.6÷12= 18÷=
÷22= ÷5= ÷1= 1﹣0.6=
0.92﹣0.2= 0.52+0.4= 0.72÷0.9= 0÷0.24=
3.3÷0.1= 1÷0.25= 0.6×5= 0.2×0.4=
0.25×36= ×3= ×12= 4÷=
÷= ÷= 10÷= 3.5+47=
0.4×12×25= 10×= 260﹣48﹣52= 3.6÷12=
18÷= 5.7+4.3= 0.25×36= ×3=
0.4×12×25=
【答案】1.01,11,79,28.26,1.5,0.03,198,2,3.6,1.05,10,0.75,4,,0.3,81,,0.125,0.3,0.4,0.72,0.92,0.8,0,33,4,3,0.08,9,1.125,9,7,0.75,,25,50.5,120,4,160,0.3,81,10,9,0.125,120.
【解析】
试题分析:(1)(2)(3)(4)(6)(9)(10)(11)(15)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(36)(37)(40)(42)(43)(45)依据小数四则运算计算方法解答,
剩余的按照分数四则运算计算方法解答.
解:26.26÷26=1.01; 4.57+6.43=11; 7.9×11﹣7.9=79; 3.14×32=28.26;
3+﹣3+=1.5; 0.1×30%=0.03; 2÷1%﹣2=198; ÷=2;
1.8×4×0.5=3.6; 1.5﹣1.5×0.3=1.05; 5.7+4.3=10; 1﹣25%=0.75;
18×=4; ×=; 3.6÷12=0.3; 18÷=81;
÷22=; ÷5=0.125; ÷1=0.3; 1﹣0.6=0.4;
0.92﹣0.2=0.72; 0.52+0.4=0.92; 0.72÷0.9=0.8; 0÷0.24=0;
3.3÷0.1=33; 1÷0.25=4; 0.6×5=3; 0.2×0.4=0.08;
0.25×36=9; ×3=1.125; ×12=9; 4÷=7;
÷=0.75; ÷=; 10÷=25; 3.5+47=50.5;
0.4×12×25=120; 10×=4; 260﹣48﹣52=160; 3.6÷12=0.3;
18÷=81; 5.7+4.3=10; 0.25×36=9; ×3=0.125;
0.4×12×25=120.
故答案依次为:1.01,11,79,28.26,1.5,0.03,198,2,3.6,1.05,10,0.75,4,,0.3,81,,0.125,0.3,0.4,0.72,0.92,0.8,0,33,4,3,0.08,9,1.125,9,7,0.75,,25,50.5,120,4,160,0.3,81,10,9,0.125,120.