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（79-13）×（79+23）；66×（811+533+722）；334×0.75+6.25×75%；23×15+76÷5+20%．
题目详情
（
-
）×（
+
）； 66×（
+
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
-
）×（
+
）； 66×（
+
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
7 7 9 9
）×（
+
）； 66×（
+
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
1 1 3 3
+
）； 66×（
+
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
7 7 9 9
）； 66×（
+
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
2 2 3 3
+
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
8 8 11 11
+
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
5 5 33 33
）； 3
×0.75+6.25×75%； 23×
+76÷5+20%．
7 7 22 22
×0.75+6.25×75%； 23×
+76÷5+20%．
3 3 4 4
+76÷5+20%．
1 1 5 5
| 7 |
| 9 |
| 1 |
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| 1 |
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▼优质解答
答案和解析
（1）（
-
）×（
+
）；
=
×
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
7 7 79 9 9-
）×（
+
）；
=
×
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
1 1 13 3 3）×（
+
）；
=
×
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
7 7 79 9 9+
）；
=
×
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
2 2 23 3 3）；
=
×
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
4 4 49 9 9×
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
13 13 139 9 9
=
；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
52 52 5281 81 81；
（2）66×（
+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
8 8 811 11 11+
+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
5 5 533 33 33+
）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
7 7 722 22 22）
=66×
+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
8 8 811 11 11+66×
+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
5 5 533 33 33+66×
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
7 7 722 22 22
=48+10+21
=79；
（3）3
×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
3 3 34 4 4×0.75+6.25×75%
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
1 1 15 5 5+76÷5+20%
=23×
+76×
+
=（23+76+1）×
=100×
=20．
1 1 15 5 5+76×
+
=（23+76+1）×
=100×
=20．
1 1 15 5 5+
=（23+76+1）×
=100×
=20．
1 1 15 5 5
=（23+76+1）×
=100×
=20．
1 1 15 5 5
=100×
=20．
1 1 15 5 5
=20．
| 7 |
| 9 |
| 1 |
| 3 |
| 7 |
| 9 |
| 2 |
| 3 |
=
| 4 |
| 9 |
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 7 |
| 9 |
| 1 |
| 3 |
| 7 |
| 9 |
| 2 |
| 3 |
=
| 4 |
| 9 |
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 3 |
| 7 |
| 9 |
| 2 |
| 3 |
=
| 4 |
| 9 |
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 7 |
| 9 |
| 2 |
| 3 |
=
| 4 |
| 9 |
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 2 |
| 3 |
=
| 4 |
| 9 |
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 4 |
| 9 |
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 13 |
| 9 |
=
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 52 |
| 81 |
（2）66×（
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 5 |
| 33 |
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 7 |
| 22 |
=66×
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 8 |
| 11 |
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 5 |
| 33 |
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 7 |
| 22 |
=48+10+21
=79；
（3）3
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 3 |
| 4 |
=3.75×0.75+6.25×0.75
=0.75×（3.75+6.25）
=0.75×10
=7.5；
（4）23×
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 5 |
=23×
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 5 |
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 5 |
=（23+76+1）×
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 5 |
=100×
| 1 |
| 5 |
=20．
| 1 |
| 5 |
=20．
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分组频数频率累积频率[3.95,4.35）2[4.35,4.75）4[4.75,5.15)14[5. 2020-03-31 …
直接写得数800÷5=480÷6=6.75-3.1=1-0.5=96+9=531-188=4×25 2020-04-07 …
5+6+7=5×6×75+5=66÷5=65×7=75、6、7不是现代数字,它们各代表着另一个数字 2020-06-04 …
脱式计算．（能简算的要简算）（1）143+3038686+90909434343+13131386 2020-06-06 …
计算．6.9+4.8+3.10.456+6.22+3.7815.89+（6.75-5.89）4.0 2020-06-14 …
（2013•云南）“辽宁舰”航母已正式列入中国人民解放军海军系列，其满载时排水量（满载时排开水的质 2020-07-04 …
中国航母辽宁舰是中国人民海军第一艘可以搭载固定翼飞机的航空母舰，满载排水量为67500吨，这个数据 2020-07-08 …
I)-2,3,-3,-4.5,6.75,（）A：15B：-15.1875C:16D:16.4863 2020-07-18 …
16、由四舍五入法得到大荆镇人口为6.8万，则大荆镇实际人口数x的范围（）A、6.75＜x＜6.8 2020-08-02 …
中国航母辽宁舰（如图）是中国人民海军第一艘可以搭载固定翼飞机的航空母舰，满载排水量为67500吨，这 2020-11-03 …