如图，已知：等腰三角形的一个顶角是98°．求：底角的度数．
直接写出得数 84.6÷4= 1÷12.5%= 25×0.85×4= 0.99×74= 7﹣1= 3.17+37.1﹣2.17=
4.2÷0.2=== 0.1+0.2×0.3=．
直接写得数 0.125×8= 0.056×= 7÷1.4= 1.75+25%= 1.8×（1﹣）=×0.3=×9+×9== 1÷0.1﹣1×0.1==
3﹣1.06== 0.1+0.2×0.3==
直接写得数． 1﹣0.92= 12.12﹣12===== 2.7+1.63+7.3= 0.83×9+0.83= 1.25×= 78÷2.5÷4=
= 3.17+37.1﹣2.17=
=
=
．
= 7÷1.4= 1.75+25%=
）=
×0.3=
×9+
×9=
=
=
= 0.1+0.2×0.3=
=
=
=
=
= 2.7+1.63+7.3= 0.83×9+0.83=
= 78÷2.5÷4=
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