摘要：5+0.9= 3-1.4= 1.2-0.5= 27÷3×7＝ 24-8+10＝ 3×6÷9＝
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口算．
|
(1) |
(2) |
(3) |
(4) |
|
24 ÷3= |
12 ×5= |
4 ×7＋25= |
430 －160= |
|
36 ÷4= |
14 ×3= |
45 ÷5＋8= |
390 ＋390= |
|
45 ÷5= |
17 ×4= |
10 ×6－12= |
820 －650= |
|
64 ÷8= |
16 ×2= |
63 ＋78＋0= |
594 －9= |
|
72 ÷9= |
13 ×5= |
27 ÷3－9= |
798 ＋7= |
口算．
|
(1) |
(2) |
(3) |
(4) |
|
24 ÷3= |
12 ×5= |
4 ×7＋25= |
430 －160= |
|
36 ÷4= |
14 ×3= |
45 ÷5＋8= |
390 ＋390= |
|
45 ÷5= |
17 ×4= |
10 ×6－12= |
820 －650= |
|
64 ÷8= |
16 ×2= |
63 ＋78＋0= |
594 －9= |
|
72 ÷9= |
13 ×5= |
27 ÷3－9= |
798 ＋7= |
口算．
|
(1)1.4 ＋3.8= |
(2)9.7 －6.5= |
(3)3.75 －2.25= |
|
(4)10 －9.2= |
(5)4.2 －1.6= |
(6)42.3 ＋5.6= |
|
(7)0.27 ＋0.73= |
(8)4.24 ＋3.6= |
(9)1.4 ＋0.3= |
|
(10)0.5 ＋0.08= |
(11)1 －0.03= |
(12)7.2 －3.7= |
|
(13)3 －0.52= |
(14)4.6 －1.4= |
(15)0.12 ＋0.03= |
|
(16)4.6 －1.4= |