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四、排一排。(填序号)(每题 5 分，共 20 分)
1. ① 34 + 27 ② 92 - 18 ③ 35 + 8 ④ 42 - 9 ⑤ 54 - 17
(
2. ① 54 - 15 ② 18 + 22 ③ 65 - 9 ④ 27 + 8 ⑤ 34 + 16
(
3. ① 90 - 12 ② 28 + 16 ③ 52 - 19 ④ 38 + 16 ⑤ 44 + 27
(
4. ① 6 × 7 ② 8 × 4 ③ 82 - 31 ④ 11 + 35 ⑤ 51 - 17
(
1. ① 34 + 27 ② 92 - 18 ③ 35 + 8 ④ 42 - 9 ⑤ 54 - 17
(
④
)＜(⑤
)＜(③
)＜(①
)＜(②
)2. ① 54 - 15 ② 18 + 22 ③ 65 - 9 ④ 27 + 8 ⑤ 34 + 16
(
③
)＞(⑤
)＞(②
)＞(①
)＞(④
)3. ① 90 - 12 ② 28 + 16 ③ 52 - 19 ④ 38 + 16 ⑤ 44 + 27
(
①
)＞(⑤
)＞(④
)＞(②
)＞(③
)4. ① 6 × 7 ② 8 × 4 ③ 82 - 31 ④ 11 + 35 ⑤ 51 - 17
(
②
)＜(⑤
)＜(①
)＜(④
)＜(③
)答案
1. ④ ⑤ ③ ① ②
2. ③ ⑤ ② ① ④
3. ① ⑤ ④ ② ③
4. ② ⑤ ① ④ ③
2. ③ ⑤ ② ① ④
3. ① ⑤ ④ ② ③
4. ② ⑤ ① ④ ③
五、在 □ 里填合适的数。（每题 2 分，共 24 分）
67 - □ = 38 □ + 25 = 44 □ ÷ 4 = 9 39 + □ = 84
4 × □ = 32 □ + 29 = 48 □ - 13 = 49 47 + □ = 62
75 - □ = 27 □ ÷ 9 = 9 □ × 6 = 54 □ × 3 = 27
67 - □ = 38 □ + 25 = 44 □ ÷ 4 = 9 39 + □ = 84
4 × □ = 32 □ + 29 = 48 □ - 13 = 49 47 + □ = 62
75 - □ = 27 □ ÷ 9 = 9 □ × 6 = 54 □ × 3 = 27
答案
29 19 36 45
8 19 62 15
48 81 9 9
8 19 62 15
48 81 9 9
哥哥比弟弟多收集了 18 枚邮票，哥哥的邮票数是弟弟的 3 倍，哥哥收集了(
27
)枚邮票。答案
27
