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1、2022年二年级数学下册 7.2 几百几十加减几百几十笔算练习题 新人教版
笔算下列各题：
320 + 210 = 560 + 110 =
250 + 220 = 370 + 120 =
840 + 160 = 770 + 240 =
480 + 230 = 330 + 390 =
450 + 470 = 390 + 250 =
550 + 390 = 190 + 250 =
360 +250 = 440 + 180
2、 =
780 – 250 = 360 – 120 =
440 – 130 = 660 – 250 =
360 – 270 = 710 – 230 =
420 – 130 = 370 – 280 =
250 – 160 = 520 – 140 =
960 – 580 = 630 – 250 =
760 – 290 = 550 – 290 =
310 – 120 = 440 -250 =
答案：
3
3、20 + 210 = 530 560 + 110 =670
250 + 220 =470 370 + 120 =490
840 + 160 =1000 770 + 240 =1100
480 + 230 =710 330 + 390 =720
450 + 470 =920 390 + 250 =640
550 + 390 =940 190 + 250 =440
360 +250 =610 440 + 180 =620
4、
780 – 250 =530 360 – 120 =240
440 – 130 =310 660 – 250 =410
360 – 270 =90 710 – 230 =480
420 – 130 =290 370 – 280 =90
250 – 160 =90 520 – 140 =380
960 – 580 =360 630 – 250 =380
760 – 290 =470 550 – 290 =260
310 – 120 =190 440 -250 =190
2022年二年级数学下册 7.2 几百几十加减几百几十笔算练习题 新人教版
