算一算．
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(1)1 ＋2= |
(2)1 ＋1= |
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(3)6 ＋3= |
(4)3 ＋4= |
阴影部分占整个图形的几分之几？
(分数，先填分子，后填分母)|
(1)
|
(2)
|
比比谁算得快．
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(1)1.5 －0.3= |
(2)4.5 －2.5= |
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(3)9.6 －0.6= |
(4)3.7 －0.5= |
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(5)2.8 －2.3= |
(6)5.4 －5.2= |
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(7)3.28 －0.28= |
(8)2.9 －0.8= |
比比谁算得快．
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(1)0.7 ＋0.5= |
(2)4.3 ＋0.7= |
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(3)0.5 ＋0.4= |
(4)1.5 ＋1= |
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(5)0.4 ＋0.8= |
(6)7.2 ＋1.2= |
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(7)1.3 ＋0.5= |
(8)2.8 ＋1.1= |
比比谁算得快．
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(1)1.28 －1.28= |
(2)0.34 －0.32= |
(3)0.5 －0.3= |
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(4)2.5 －2.4= |
(5)4.8 －0.8= |
(6)3.7 ＋6.1= |
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(7)1.5 ＋1= |
(8)3 ＋0.3= |
口算．
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(1)6.4 ＋3.6= |
(2)0.9 －0.09= |
(3)1 －0.05= |
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(4)0.3 ＋0.5= |
(5)5.7 －0.9= |
(6)7.3 ＋2.7= |
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(7)0.3 ＋0.65= |
(8)3.5 －2.5= |
(9)1.75 ＋0.25= |
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(10)4.63 ＋2.4= |
(11)4.7 －3= |
(12)3.6 －1.8= |
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(13)0.06 ＋15= |
(14)2 －0.68= |
(15)0.28 ＋1.5= |
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(16)10 －0.8= |
口算．
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(1)1.4 ＋3.8= |
(2)9.7 －6.5= |
(3)3.75 －2.25= |
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(4)10 －9.2= |
(5)4.2 －1.6= |
(6)42.3 ＋5.6= |
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(7)0.27 ＋0.73= |
(8)4.24 ＋3.6= |
(9)1.4 ＋0.3= |
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(10)0.5 ＋0.08= |
(11)1 －0.03= |
(12)7.2 －3.7= |
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(13)3 －0.52= |
(14)4.6 －1.4= |
(15)0.12 ＋0.03= |
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(16)4.6 －1.4= |
口算．
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(1)36 ×2= |
(2)5 ×42= |
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(3)20 ×30= |
(4)48 ×20= |
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(5)35 ×30= |
(6)71 ×10= |
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(7)13 ×6= |
(8)15 ×3＋8= |
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(9)29 ＋8×6= |
(10)80 ×9= |
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(11)66 ×40= |
(12)(6 ＋13)×20= |