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$24 + 13 =$ $37 + 18 =$ $28 + 7 =$ $24 + 17 =$
$37 - 24 =$ $55 - 37 =$ $35 - 7 =$ $41 - 24 =$
$37 - 13 =$ $55 - 18 =$ $35 - 28 =$ $41 - 17 =$
$37 - 24 =$ $55 - 37 =$ $35 - 7 =$ $41 - 24 =$
$37 - 13 =$ $55 - 18 =$ $35 - 28 =$ $41 - 17 =$
答案
37
55
35
41
13
18
28
17
24
37
7
24
55
35
41
13
18
28
17
24
37
7
24
$15 + 22 =$ $20 + 10 + 20 =$ $80 - 40 - 35 =$
$35 + 9 =$ $8 + 44 + 6 =$ $32 + 6 - 30 =$
$93 - 28 =$ $73 + 7 - 60 =$ $74 - 8 + 10 =$
$89 - 49 =$ $82 - 72 + 19 =$ $49 + 9 - 50 =$
$35 + 9 =$ $8 + 44 + 6 =$ $32 + 6 - 30 =$
$93 - 28 =$ $73 + 7 - 60 =$ $74 - 8 + 10 =$
$89 - 49 =$ $82 - 72 + 19 =$ $49 + 9 - 50 =$
答案
37
50
5
44
58
8
65
20
76
40
29
8
50
5
44
58
8
65
20
76
40
29
8
1. 比大小。
$23 + 35 ◯ 70 - 15$ $80 - 25 ◯ 40 + 20$ $45 + 12 ◯ 68 - 10$
$90 - 30 ◯ 25 + 30$ $10 + 20 ◯ 50 - 25$ $75 - 40 ◯ 15 + 25$
$55 + 15 ◯ 90 - 25$ $100 - 45 ◯ 65 - 5$ $40 + 30 ◯ 35 + 35$
$23 + 35 ◯ 70 - 15$ $80 - 25 ◯ 40 + 20$ $45 + 12 ◯ 68 - 10$
$90 - 30 ◯ 25 + 30$ $10 + 20 ◯ 50 - 25$ $75 - 40 ◯ 15 + 25$
$55 + 15 ◯ 90 - 25$ $100 - 45 ◯ 65 - 5$ $40 + 30 ◯ 35 + 35$
答案
＞
＜
＜
＞
＞
＜
＞
＜
=
＜
＜
＞
＞
＜
＞
＜
=
2. 填一填。
$( \quad ) + 15 = 32$ $48 - ( \quad ) = 29$ $( \quad ) - 23 = 17$
$( \quad ) - 8 = 45$ $( \quad ) - 12 = 64$ $91 - ( \quad ) = 73$
$( \quad ) + 34 = 60$ $( \quad ) + 20 = 55$ $27 + ( \quad ) = 50$
$( \quad ) + 15 = 32$ $48 - ( \quad ) = 29$ $( \quad ) - 23 = 17$
$( \quad ) - 8 = 45$ $( \quad ) - 12 = 64$ $91 - ( \quad ) = 73$
$( \quad ) + 34 = 60$ $( \quad ) + 20 = 55$ $27 + ( \quad ) = 50$
答案
17
19
40
53
76
18
26
35
23
19
40
53
76
18
26
35
23
