总述:本次共解4题。其中
☆算术计算3题
☆整数计算1题
〖1/4整数列竖式计算〗
题型:整数乘法
原题:77777777*99999999 解:
77777777*99999999 =
7777777622222223 列竖式计算:
| | | | | | | | | | | | | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
✖ | | | | | | | | | | | | | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
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| | | | | | | | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 |
| | | | | | | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | |
| | | | | | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | | |
| | | | | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | | | |
| | | | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | | | | |
| | | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | | | | | |
| | | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | | | | | | |
| | | | | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 3 | | | | | | | |
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| | | | | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 |
〖2/4算式〗
作业:求算式 1+3+5+7+10+13+15+17+19 的值.
题型:数学计算
解:
1+3+5+7+10+13+15+17+19
=4+5+7+10+13+15+17+19
=9+7+10+13+15+17+19
=16+10+13+15+17+19
=26+13+15+17+19
=39+15+17+19
=54+17+19
=71+19
=90 答案:1+3+5+7+10+13+15+17+19=90〖3/4算式〗
作业:求算式 2+4+6+8+10+12+14+16+18 的值.
题型:数学计算
解:
2+4+6+8+10+12+14+16+18
=6+6+8+10+12+14+16+18
=12+8+10+12+14+16+18
=20+10+12+14+16+18
=30+12+14+16+18
=42+14+16+18
=56+16+18
=72+18
=90 答案:2+4+6+8+10+12+14+16+18=90〖4/4算式〗
作业:求算式 48*49*50*51*52/5 的值.
题型:数学计算
解:
48*49*50*51*52/5
=2352*50*51*52/5
=117600*51*52/5
=5997600*52/5
=311875200/5
=62375040 答案:48*49*50*51*52/5=62375040你的问题在这里没有得到解决?请到 热门难题 里面看看吧!