二、口算(每题1分,共24分)
28 + 20 = 58 – 6 = 66 – 60 = 75 – 30 = 38 + 40 = 51 + 25 =
71 + 23 = 89 – 8 = 50 + 24 = 4 + 55 = 96 – 20 = 36 + 30 =
66 – 60 = 38 + 21 = 30 + 34 = 69 – 7 = 59 – 4 = 91 – 50 =
73 – 70 = 95 – 50 = 25 + 44 = 62 + 7 = 30 + 49 = 86 – 60 =
三、在( )里填上合适的数。(每题2分,共24分)
3 +( )=73 5 +( )=70 4 +( )=17 63=( )+13
43 +( )=93 38 –( )=8 68 –( )=48 72=( )+ 70
( )– 6 = 50 ( )+ 20 = 66 48 =( )+20 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 = 53-20= 50+46=
41-8 = 46+3 = 46+7 = 8 +59= 37-5 = 76-50=
84+6 = 85-4 = 29-3 = 49+9 = 84-5 = 16+8 =
69+8 = 64-40= 7 +28= 46-9 = 87-5 = 36+8 =
45-6 = 59+7 = 59+5 = 81+9 = 37-9 = 58-4 +12=
37+9 = 31-8 = 67-6 = 27+3 = 36-7 = 43+10=
46+8 = 5 +47= 4 +27= 90+8 = 23-9 = 26-7 +9 =
25+7 = 26+8 = 45-8 = 54-8 +8 = 70-5 = 54-8 =
23-6 = 50-5 = 83-9 = 24-8 +10= 6 +73= 32+9 =
87-9 = 2 +39= 72-5 = 74-9 +30= 35-4 = 63-8 +8 =
36+9 = 50+27= 34-7 = 45+8 -50= 43-4
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