六年级有120人达到《国家体育锻炼标准》（儿童组），达标率是75%，六年级共有多少人？
直接写出得数﹣=﹣=﹣=+=+=﹣=+=﹣=
直接写出得数．+=﹣=+=﹣= 10﹣﹣=====．
直接写得数===== 1﹣= 1﹣==
直接写出得数.+= 1﹣=﹣= 2.5×3.8×4=+= 10﹣9.12=+0.25= 0.65×9+0.65=
计算下面各题，能简算的要简算． ．
﹣
=
﹣
=
﹣
=
+
=
+
=
﹣
=
+
=
﹣
+
=
﹣
=
+
=
﹣
=
﹣
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=．
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= 1﹣
= 1﹣
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=
+
= 1﹣
=
﹣
= 2.5×3.8×4=
+
= 10﹣9.12=
+0.25= 0.65×9+0.65=
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