苏教版一年级下册数学补充习题第42页答案

1.算一算，比一比

38,40,42;

48,50,52;

28,30,32;

41,86;

49,54;

59,32

2.先估计得数是几十多，再计算

45,69,62,

58,23,76

3.

36+7=43(朵)