二年级数学递等式计算.docx

文档介绍：递等式计算
9X4+6
7
X 3+5
50
—4X5
7+6X2
4+24
+ 8
5
—8 + 4
72 + 8—3
36+81
+ 9
45+8
X4
80—6 X 8
15
—6X 2
4+12=
=
=
6X2+7
7
X (45+5)
19
+ 9X 6
=
=
=
=
=
=
(19+2) +3
(6+4) +27
32
+ 4+16
=
=
=
=
=
=
29 — 4X2
16
+ 2X7
42
+ 6X 7
99- (99-29)
93-(39-23)
30-(23+29)
=
=
=
=
=
=
55-46+22
65-28+26
58+18-56
=
=
=
=
=
=
58-26+25
84-25+16=
4+25-16
=
=
=
=
=
=
18-26+25
85-25+16
20+(22-28)
=
=
=
=
=
=
52-22-4
82-(28-22)
51-(25-24)
=
=
=
=
=
=
22+22+84
82-(28-22)
88+ (88-28)
=
=
=
=
=
=
77-46+32
63-38+26
79+19-36
=
=
=
76+72+8
(100-63)
8
38
—(49— 21)
=
=
=
=
=
=
42+ (1 + 6)
6
X (5+4)
6
+ 8X4
=
=
=
=
=
=
(6+2) X 7
(40—28)-
6
(42+30) X2
=
=
=
=
=
=
6X8+6
(66—50)-
2
36 + (2+4)
=
=
=
=
=
=
38-36+27
84-27+16=
4+27-16
=
=
=
=
=
=
73-23-4
93-(36 -7)
71- (25-24)
=
=
=
=
=
=
30- (19+ 2)
(26+28)-
9
34
+ 8X2
=
=
=
=
=
=
(3+5) X 6
36
+ 9X6 =
(88—16) +8
9X8 — 21
3
+ 4X6
8
X4+6
=
=
=
=
=
=
42 + 7X6
60
— 9X4
2
X (2+5)
=
=
=
=
=
=
33-46+22
63-28+26
38+18-36
=
=
=
=
=
=
38-26+23
84-23+16
4+23-16
=
=
=
=
=
=
72+ (3X3)
(42—20) +2
9
X8+51
=
=
=
=
=
=
36+5X7
7
一 (10—3)
56
+ 8X 7
=
=
=
=
=
=
(75—18) X7
9
X6 + 4
24
+ 4X 8
=
=
=
=
=
=
81 + (1X9)
(82—26) +7
4
X8+51
=
=
=
36+7X7
63
=
+ 8X7
+ (21 — 12)
56
=
=
=
=
=
=
(35—28) X7
9
X6 + 42
36
+ 4X8
=
=
=
=
=
=
55+7X7
49
+ (14 — 7)
81
+ 9X8
=
=
=
=
=
=
(79—23) +8
7
X6 + 42
16
+ 4X8
=
=
=
=
=
=
24+12+ 6
35-63
+ 7
5
X8-39
=
=
=
=
=
=
(23+49) +8
48-18
+ 3
8
X7-34