五年级数学上册口算题.doc

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1、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=0.007×100=6÷100=49×2=12×7=24×100=3.136×100=63.6÷100=43×4=72×5=2.67×10=36.7÷10=1.356÷100=32×4=82×5=0.136×100=0.3÷100=2.3÷10=第二课时小数乘整数（练习）计算14×9=3.14×2=4.44×200=23×2.00=0.13×3=17×8=5×1.7=2.8×40=1.25×80=0.6×7=20×

2、4=2.5×4=100×5.176=3.5×20=0.12×5=42×3=5.26×0=3×6.2=0.25×40=1.2×20=第三课时小数乘小数（新授）计算1.2×3=2.5×40=2.4×10=4×0.05=3.5×2=0.37×4=0.37×4=2.5×40=10×0.07=1.4×6=0.18×7=1.5×4=2×0.05=0.14×4=3.8×5=3.7×3=0.6×8=3×1.7=0.05×7=8.7×9=第四课时小数乘小数（练习）口答它们的积有几位小数0.45×2.5=0.02×1.7=0.1×0.01=68.5

3、9×12.23=0.36×0.2=0.213×0.26=0.3×0.3=0.51×0.6=1.006×0.3=3.82×0.3=1.3×3=3.7×0.2=105.2×0.2=2.71×0.4=1.9×46.78=第五课时小数的四则混合运算（新授）估算它们的结果0.31×3≈1.2×0.8≈0.98×12.1≈1.51×2.01≈0.97×3.62≈0.46×12≈0.8×100.2≈2.9×6≈9.2×0.3≈30×0.3≈1.03×5.21≈1.03×0.521≈0.103×5.21≈10.3×0.521≈103×5.21≈

4、第六课时小数的四则混合运算（练习）计算6.8×0.1=4.8×8=2.14×2=1.1×0.8=0.5×2×0.1=4×0.4×0.3=7×0.7×0=0.75×2.2×0.3=8.6+1.4×5=第七课时我学会了吗？（复习课）计算2.4×8=0.6×17=0.16×5=0.59×2=3×0.6×7=9.7×0.2=0.3×0.39=0.17×4=8.4×8=5×4×0.5=8.6×0.3=0.08×10=3.2×0.9=0.017×7=8×0.2×5=0.5×0.61×0.2=0.24×4.52+0.24×5.48（7.6-0

5、.23）×2.64=第二单元图案美——对称、平移与旋转练习内容：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9.4×0.3=0.17+0.06=0.79×2=0.5×8.1=4.5×0.6=6.5×0.9=1.02-0.09=0.06×1.9=0.14×7=3.9×70=0.8×5=0.83+0.6=1.6×0.7=2.8×0.3=0.8×9.7=9.4×5=0.98-0.09=90×0.1=0.2×7.5=0.04×2.5=计算第二

6、课时1.9×0.9=43×0.9=0.15×7=1.3×0.7=0.6×7.6=4.4×0.2=8.3×5=0.9×1.5=3.6×0.2=9.4×0.3=4.8×0.2=7.8×0.3=0.3×20=65×0.4=2.9×0.4=1.2×0.8=9.6×4=0.8×6.1=6.5×50=0.3×3.5=计算第三课时3.2-3.2=2.8×0.4=0.4×0.8=3.5×200=2.3×0.4=3.7+2.3=0.32×500=1.6×0.4=2.6×3=30×0.1=13.1×0.7-3.1×0.7=0.8×0.4×1.25=

7、7.5×0.12+2.5×0.12=第四课时计算4.9×0.7=3.5×0.2=0.4×0.03=2.7×3=0.25×0.4=1.6×4=0.8×0.6=0.25×100=30×2.3=1.36×2=20×3.5+6.5=1.4+3.6×8=2.3×0.12-0.3×0.12=第五课时计算1.5×0.6=0.26×0.4=0.6×0.12=7.6×0.2=4.3×0.2=2.4×3=0.7×0.15=2.3×30=0.517×0=6.4×0.4=2.5×4×3.2=102×0.4-2×0.4=104×2.5=9.9×5第三单元

8、三峡工程（二）——小数除法第一课时小数除以整数（新授）口算76÷2=721÷7=3.26÷10=0.42×0.3=5.6×20=60÷6=905÷5=435÷100=3.5×2=4.5×100=57÷3=800÷40=0.3÷100=64÷4=315÷1000=