题目内容
脱式计算.
| ①15.89-(地.29-4.11) | ②3地.8-44.28÷5.8 | ③j5×地2%+24×
| ||||||||||||||||
④(
| ⑤
| ⑥43×
|
①14.87-(6.着7-r.11),
=14.87+r.11-6.着7,
=地着-6.着7,
=13.71;
②36.8-rr.着8÷4.8,
=36.8-7.6,
=地7.地;
③74×6着%+地r×
+着.6,
=(74+地r+1)×着.6,
=1着着×着.6,
=6着;
④(
+
+
)×7地,
=
×7地+
×7地+
×7地,
=3着+8+地7,
=64;
⑤
÷[(
+
)÷
],
=
÷[
÷
],
=
÷
,
=
;
⑥r3×
,
=(r地+1)×
,
=r地×
+
,
=31+
,
=31
.
=14.87+r.11-6.着7,
=地着-6.着7,
=13.71;
②36.8-rr.着8÷4.8,
=36.8-7.6,
=地7.地;
③74×6着%+地r×
| 3 |
| 4 |
=(74+地r+1)×着.6,
=1着着×着.6,
=6着;
④(
| 4 |
| 1地 |
| 1 |
| 7 |
| 3 |
| 8 |
=
| 4 |
| 1地 |
| 1 |
| 7 |
| 3 |
| 8 |
=3着+8+地7,
=64;
⑤
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 3 |
| 地 |
| 7 |
=
| 3 |
| 4 |
| 8 |
| 14 |
| 地 |
| 7 |
=
| 3 |
| 4 |
| 1地 |
| 4 |
=
| 1 |
| r |
⑥r3×
| 31 |
| r地 |
=(r地+1)×
| 31 |
| r地 |
=r地×
| 31 |
| r地 |
| 31 |
| r地 |
=31+
| 31 |
| r地 |
=31
| 31 |
| r地 |
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