奪紅旗.
8+2
8+3
8+4
8+5
8+6
8+7
3+7
4+7
5+7
6+7
7+7
你發(fā)現(xiàn)了什么?
分析:根據(jù)整數(shù)加法的計(jì)算方法進(jìn)行計(jì)算即可得到答案
解答:解:
8+2=10
8+3=11
8+4=12
8+5=13
8+6=14
8+7=15
3+7=10
4+7=11
5+7=12
6+7=13
7+7=14
答:我發(fā)現(xiàn)前6小題的第一個(gè)加數(shù)都是8,第二個(gè)加數(shù)依次多1,得出的和也是依次多1;后5小題的第二個(gè)加數(shù)都是7,第一個(gè)加數(shù)依次多1,得出的和也是依次多1.
點(diǎn)評:此題主要考查的是整數(shù)加法計(jì)算方法的應(yīng)用.
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