问题描述: 急需数学计算题带答案 初一 1个回答 分类:数学 2019-08-24 问题解答: 我来补答 (1)1.25×(8+10) =1.25×8+1.25×10 =10+12.5 =22.5 (2)9123-(123+8.8) =9123-123-8.8 =9000-8.8 =8991.2 (3)1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9 9999×1001 =9999×(1000+1) =9999×1000+9999×1 =10008999 (4)14.8×6.3-6.3×6.5+8.3×3.7 =(14.8-6.5)×6.3+8.3×3.7 =8.3×6.3+8.3×3.7 =8.3×(6.3+3.7) =8.3×10 =83 (5)1.24+0.78+8.76 =(1.24+8.76)+0.78 =10+0.78 =10.78 (6)933-157-43 =933-(157+43) =933-200 =733 (7)4821-998 =4821-1000+2 =3823 (8)132×125×25 =4×8×125×25 =(4×25)×(8×125) =100×1000 =100000 (9)9048÷268 =(2600+2600+2600+1248)÷26 =2600÷26+2600÷26+2600÷26+1248÷269 =100+100+100+48 =348 (10)2881÷43 =(1290+1591)÷434 =1290÷43+1591÷43 =30+37 展开全文阅读