12 - 8 = 11 - 7 = 18 - 9 = 17 - 8 = 14 - 8 =

13 - 7 = 15 - 8 = 14 - 5 = 11 - 9 = 17 - 9 =

17 - 9 = 11 - 5 = 13 - 8 =

⼆、⼝算（每题1分，共24分）

28 + 20 = 58 - 6 = 66 - 60 = 75 - 30 = 38 + 40 =

71 + 23 = 89 - 8 = 50 + 24 = 4 + 55 = 96 - 20 =

66 - 60 = 38 + 21 = 30 + 34 = 69 - 7 = 59 - 4 =

73 - 70 = 95 - 50 = 25 + 44 = 62 + 7 = 30 + 49 =

86 - 60 = 91 - 50 = 36 + 30 = 51 + 25 =

三、在（）⾥填上合适的数。（每题2分，共24分）

3 +（）=73 5 +（）=70

4 +（）=17

43 +（）=93 38 -（）=8 68 -（）=48

（）- 6 = 50 （）+ 20 = 66 48 =（）+20

63=（）+13 72=（）+ 70 59=（）+ 9

四、计算。（每题2分，共28分）

18+9 - 9 = 12 - 8 + 70 = 70 - 30 + 6 = 46 + 40 + 2 =

99 - 9 - 40 = 5 + 70 - 5 = 9 + 7 + 20 = 14 - 5 + 30 =

30 + 6 + 4 = 55 - 5 + 15 = 36 +30 +20= 5 + 5 5 +20=

13 - 5 + 50= 82 - 80 +8= 98- 20-8= 25+60+5=

58+4 ＝ 71-6 ＝ 5 +78＝ 35+5 ＝ 41+9 ＝ 98-90= 93-9 =　　5 +37＝ 5 +82＝ 60-9 ＝

41-8 ＝ 46+3 ＝ 46+7 ＝ 53-20＝

84+6 ＝ 85-4 ＝ 29-3 ＝ 49+9 ＝

84-5 ＝ 8 +59＝ 37-5 = 50+46＝

69+8 ＝ 64-40＝ 7 +28＝ 46-9 ＝

45-6 ＝ 59+7 ＝ 59+5 ＝ 81+9 ＝

16+8 ＝ 76-50＝ 87-5 ＝ 36+8 ＝

37+9 ＝ 31-8 ＝ 67-6 = 27+3 ＝

46+8 ＝ 5 +47＝ 4 +27＝ 90+8 ＝

25+7 = 26+8 = 45-8 = 54-8 +8 ＝

23-6 = 50-5 = 83-9 = 24-8 +10=

36-7 = 43+10= 37-9 = 58-4 +12=

87-9 ＝ 2 +39= 72-5 ＝ 74-9 +30=

36+9 = 50+27= 34-7 = 45+8 -50=

40-3 = 6 +44= 24-6 = 35+8 +12=

70-5 = 54-8 = 23-9 = 26-7 +9 =

6 +73= 32+9 = 35-4 = 63-8 +8 =

71+8 = 7 +78= 24-8 = 29+5 -23=

25+9 = 50-2 = 66-5 = 72-20+27=

64-9 = 5 +31= 25-9 = 8 -3 +35=