《2025年小学数学计算高手每日10分钟二年级数学下册苏教版》

1. 照样子，填一填。
135 = (100) + (30) + (5) 589 = ( ) + ( ) + ( )
257 = ( ) + ( ) + ( ) 364 = ( ) + ( ) + ( )
909 = ( ) + ( ) 808 = ( ) + ( )
478 = ( ) + ( ) + ( ) 999 = ( ) + ( ) + ( )
850 = ( ) + ( ) 420 = ( ) + ( )
641 = ( ) + ( ) + ( ) 606 = ( ) + ( )
780 = ( ) + ( ) 210 = ( ) + ( )
505 = ( ) + ( ) 477 = ( ) + ( ) + ( )
366 = ( ) + ( ) + ( ) 310 = ( ) + ( )

答案： 200 50 7 900 9 400 70 8 800 50 600 40 1 700 80 500 5 300 60 6 500 80 9 300 60 4 800 8 900 90 9 400 20 600 6 200 10 400 70 7 300 10

2. 用竖式计算。
440 + 50 = 980 - 80 = 220 + 70 =
310 + 60 = 880 - 70 = 430 - 400 =

答案： 2. 490 900 290 370 810 30