
26个45相加和是多少?
2个回答
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解:26个45相加和是( 1170 )
∵已知需求出26个45相加和是多少
1个45 = 1 × 45 = 45
2个45 = 45 + 45 = 2 × 45 = 90
∴26个45相加和
= 26 × 45
= 26 × (40 + 5)
= 26 × 40 + 26 × 5
= 1040 + 130
= 1170
答:26个45相加和是1170
∵已知需求出26个45相加和是多少
1个45 = 1 × 45 = 45
2个45 = 45 + 45 = 2 × 45 = 90
∴26个45相加和
= 26 × 45
= 26 × (40 + 5)
= 26 × 40 + 26 × 5
= 1040 + 130
= 1170
答:26个45相加和是1170
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