一个等腰三角形,底角与顶角度数的比是7:4,底角是多少度?
直接写出得数.
95﹣37=
÷
=
+
=
×
=
25%﹣
= 0.625+
= 98×101= 18×
=
÷15= 9.25×0.125+
×
=
直接写出结果
45+38=
÷3= 4.2÷0.07= 11×
=
0.875×24= 1÷
= 7.2×
= 8﹣
=
0.25﹣
=
×0÷
=
口算.
3.7+0.63= 3.2×
= 8﹣
= 2.5×6.7×4=
75×99= 81÷
=
+
=
×(8+5)×
=
直接写出得数:
8×
=
÷12=
×
= 0×
=
3﹣
=
×
=5÷
=
÷
=
÷
=(
+
)×16= 0.8×1.5=
﹣1÷3=
直接写出得数.
10÷0.01= 8×(1﹣0.75)= 11﹣1
﹣2.125= 0.045×
=
5÷
÷4= 1÷8﹣1÷8= 9.98﹣(2.98+1.2)= 7
﹣(1
﹣0.5)=