五年级数学上册口算题.doc

五年级数学上册口算题第一单元三峡工程(一) ——小数乘法第一课时小数乘整数(新授) 口算 32× 3= 60× 3= 18× 10= × 100= 6÷ 100= 49× 2= 12× 7= 24× 100= × 100= ÷ 100= 43× 4= 72× 5= × 10= ÷ 10= ÷ 100= 32× 4= 82× 5= × 100= ÷ 100= ÷ 10= 第二课时小数乘整数(练****计算 14× 9= × 2= × 200= 23× = × 3= 17× 8=5× = × 40= × 80= × 7= 20× 4= × 4= 100 × = × 20= × 5= 42× 3= × 0=3× = × 40= × 20= 第三课时小数乘小数(新授) 计算 × 3= × 40= × 10= 4× = × 2= × 4= × 4= × 40= 10× = × 6= × 7= × 4=2× = × 4= × 5= × 3= × 8=3× = × 7= × 9= 第四课时小数乘小数(练****口答它们的积有几位小数 × = × = × = × = × = × = × = × = × = × = × 3= × = × = × = × = 第五课时小数的四则混合运算(新授) 估算它们的结果 ×3≈ × ≈ × ≈ × ≈ × ≈ × 12≈ × ≈ ×6≈ × ≈ 30× ≈ × ≈ × ≈ × ≈ × ≈ 103 × ≈第六课时小数的四则混合运算(练****计算 × = × 8= × 2= × = ×2× = 4× × = 7× × 0= × × = + ×5= 第七课时我学会了吗?(复****课) 计算 × 8= × 17= × 5= × 2=3× × 7= × = × = × 4= × 8=5×4× = × = × 10= × = × 7=8× × 5= × × = × + × ( - )× = 第二单元图案美——对称、平移与旋转练****内容:巩固小数乘整数、小数乘小数、小数的加减法。重点让学生熟练计算较简单的小数加、减、乘及四则混合运算,注意小数乘法中积的小数的位数。第一课时计算 × = += × 2= × = × = × = -= × = × 7= × 70= × 5= += × = × = × = × 5= -= 90× = × = × = 计算第二课时 × = 43× = × 7= × = × = × = × 5= × = × = × = × = × = × 20= 65× = × = × = × 4= × = × 50= × = 计算第三课时 -= × = × = ×