有10根长度不等的木条,每根长度都是整数,最短的为1,最长的89.现在想用其中的3根拼成一个三角形木架,但是不管怎样都不能拼成.这10根木条中第二长的木条长 .
直接写数对又快.
2.3+3.57= 8×12.5%= 5.7+11.8+4.3= 1÷100%=
0.99×9+0.99= 40÷9= 12×(
×
)=
×
=
﹣0.5=
×25%=
直接写得数.
0.67+4.5= 1+2%=
=
=
=
=
= 0.32÷4=
2.2+8= 5÷
×
= 0.25×
×4= 15+5÷0.2=
4.38﹣3.42+5.62﹣2.08= 125÷
= 1÷25%= 0×
=
2﹣
= 32×1.25×2.5=
直接写出得数.
9.9+0.9= 0.36÷0.6= 10﹣1.25= 0.5×1.2=
÷8=
×39=
÷0.25= 0×
÷
=
×
÷
×
=(
+
)×6=
直接写出得数
(1)
×6=
×3.5= 20÷
=
÷20=
(2)
÷3.5=
÷
=
×
=
×
×0=
(3)10÷
= 1÷20%=
×4×
=
×7÷
×7=
(4)(
﹣
)×20=
﹣
×
=
×
+
×
=
÷8÷
=