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十几减9
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十几减9
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文档为doc格式
20以内加减法窍门 在一年级的数学教学中,20以内进位加法和退位减法既是教学的重点,又是教学的难点。一般的孩子在学前班时就学会了10以内加减法,进入小学后,20以内不进位不退位......
100道口算题(20以内纯进位、退位)8+8=12-5=16+2=4+3=20-2=9+10=19-1=15+5=6+6=5+6=18-2=10+7=7+5=8+10=7+3=20-4=19-4=15+2=16-7=8+5=20-6=1+18=1+13=7+3=15-5=2+17=8+8=12-3=1+16=20-1=1+9=4+14=14+2=18-10=3+16=......
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20以内加减法练习一 14-6=5 +7=4+7=7+9=15-8= 15-9=13-4=12-7=11-6=13-5= 6+9=8+4=8+5=9+11=11-7= 11-9=12-8=16-7=13-6=15-5= 16-7=13-7=7+4=8+3=17-6= 10+6=9+5=14-7=6+10=......
学前班(一年级初期)20以内加减法口算数学练习题 (适合学前班学习数学小同学) 班级: 姓名: 2+10= 10-6= 16-1= 2+13= 4+10= 13-2= 4+1= 10-1= 13+4= 10-2= 14+1= 16-10= 1......
巧算20以内的加减法一、根据“凑十法”的思路填一填。(每空1分,共17分)二、看谁算得又对又快。(每空2分,共16分)三、在里填上“>”“<”或“=”。(每小题1分,共12分)11+71613+31616-6......