第2课时搭一搭(一)第一单元除法
13÷4=3(个)······1(根)…余数
14÷=3(个)······42(根)15÷=3(个)······43(根)16÷=4(个)······40(根)17÷=4(个)······41(根)18÷=4(个)······42(根)19÷=4(个)······43(根)20÷=5(个)······40(根)
1.摆一摆,算一算。1653个1根31
1.摆一摆,算一算。2764个3个43
33÷4=7(个)······5(根)8(个)1(根)33÷4=······81(根)(根)(个)