张伯伯购买了三年期的国债30000元，年利率是5.4%，到期时，张伯伯的本金和利息共有多少元？
直接写出得数 11﹣1.1= 1.26÷0.3= 12.5×= 13÷39= 1.5×0.2= 87.5%×= 2﹣==
直接写结果． 14.6﹣6=+= 0.21++0.79=×= 5.47﹣1.8﹣3.2=﹣0.25= 0.5÷=（+）×63= 0.1：= 1.25××8=
直接写出得数． 1.39+0.11= 0.08×0.5= 2.6﹣1.7= 85÷5=（+）×8= 4÷=÷=﹣0.9=+50%= 6.5×0.2=
口算 35+17= 11﹣0.6=+=﹣= 58﹣39= 32.8÷4=﹣== 4.6+3.2= 2.5×40=×=+= 0.43×3= 0÷5.8= 9=÷1=
直接写出得数． 19.3﹣2.7=+=×= 5.1÷0.01= 11×=÷= 15.7﹣7.5=（3.5%﹣0.035）÷=
= 13÷39=
= 2﹣
=
=
+
= 0.21+
+0.79=
×
= 5.47﹣1.8﹣3.2=
=（
+
）×63= 0.1：
= 1.25×
+
）×8=
=
÷
=
﹣0.9=
+
=
﹣
=
﹣
=
=
×
=
+
=
=
÷1=+=﹣=﹣==×=+==÷1=
+
=
= 5.1÷0.01=
=
÷
= 15.7﹣7.5=（3.5%﹣0.035）÷
=
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