二年级口算2.docx

二年级口算2.docx-
17
27-
+
49
50
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1
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7 2 2
4 8 4 -+ +
L13 2
17 1 + - -
2 2 9
4 8 3
-
5
2
+
6
3
1
4
(11)4x9 =
(13)6x6 =
(15)2x3 =
(17)6x2 =
(19)5x6 =
(21)4x2 =
(23)2x1 =
(25)5x3 =
(27)1x1 =
(29)1x2 =
(31)9x8 =
(33)1x5 =
(35)9x5 =
(37)5x5 =
(39)4x7 =
(41)6x4 =
(43)9x6 =
(45)3x3 =
(47)8 xl =
(49)1x6 =
3
2
-
⑵
9
5
⑷⑹⑻
17 8
1 1 4
243227 - -+
--
19
4
2
7
7
(12)2x9 =
(14)4x8 =
(16)4x6 =
(18)7x4 =
(20)8x8 =
(22)3x2 =
(24)3x6 =
(26)6x9 =
(28)8x3 = (30)7x2 = (32)8x7 = (34)7 x9 = (36)3x4 = (38)4x5 = (40)5 x2 = (42)9 x3 = (44)5 xl = (46)8x4 = (48)7 x3 = (50)8x5 =
--1
--9
=-
=⑸
=
一一55
一一=5
案4)
答(
=6
-3
30
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⑼
5
3
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⑻
9
6
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37
- --)16161616 )611223344 /|\ /|\ /|\ /|\ /|\ /|\ /|\ /|\ /|\
36 (12) = 18 (13) = 36 (14) = 32 (15) = 6
24 (17) = 12 (18) = 28 (19) = 30 (20) = 64
8 (22) = 6 (23) = 2 (24) = 18 (25) = 15
54
(27) = 1
(28) = 24
72
(32) = 56
(33) = 5
12
(37) = 25
(38) = 20
24
(42) = 27
(43) = 54
(47) = 8 (48) = 21
(29) = 2 (30) = 14
(34) = 63 (35) = 45
(39) = 28 (40) = 10
(44) = 5 (45) = 9
(49) = 6 (50) = 40
⑶⑸⑺⑼
1 + 24 - 34 =
36 + 26-59 =
67 - 43 -11 =
47 + 27 - 58 =
28 + 64 - 28 =
(11)2x8 = (13)5x8 = (15)3x4 = (L7) 4x1 = (19)8x7 = (21)4x6 = (23)9x8 = (25)9x9 = (27)2x2 = (29)6x6 = (31)2x6 = (33)5x7 = (35)4x5 = (37)1x3 = (39)1x8 = (41)6x5 = (43)5 x6 = (45)4x8 = (47)3 x5 = (49)8 xl =
(2)51 + 17-50 =
(4) 61 + 32-64 =
(6)57 + 42 -24 =
(8) 63-51 + 13 =
(10) 24 + 42 - 54 = (12)8x6 = (14)7x1 = (16)9x4 = (18)3x6 = (20)3x2 = (22)2x1 = (24)9 xl = (26)3x1 = (28)6x3 = (30)2x5 = (32)9x7 = (34)7 x5 = (36)8x8 = (38)2x7 = (40)6 x4 = (42)1x2 = (44)4 x3 = (46)1x1 = (48)2x4 = (50)1x5 =
5
7
- --)16161616 )611223344
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(2) = 18 (3) = 3 (4) = 29 (5) = 13
(7) = 16 (8) = 25 (9) = 64 (10) = 12
(12) = 48 (13) = 40 (14) = 7 (15) = 12
(17) = 4 (18) = 18 (19) = 56 (20) =