二年级数学上册口算能力竞赛题在线练习

　　35 + 10 =80 – 20 =65 – 50 =23 + 3 =

　　16 + 30 =35 + 40 =16 + 8 =21 + 8 =

　　85 – 9 =23 + 30 =56 + 9 =67 – 40 =

　　87 + 0 =3×6=8×6= 3×5=

　　73 – 9 =7×2= 3×5= 8×6=

　　40 + 40 =5×6= 7×7= 4×8

　　8 + 37 =58 -16 = 61+588 – 60 =

　　25 – 20 =1× 9 =9 + 3 =5 × 7 =

　　52 + 16 =8＋56＝86－20＝17－9＝

　　75 – 60 =35 -18 =41 – 2 =16 + 80 =

　　45 – 10 =72 – 9 = 26 + 3 = 20 + 39 =

　　16 + 9 =6 + 30 = 59 – 9 =47 – 6 =

　　15 – 15 =56 – 8 = 65 + 8 = 73 + 7 =

　　82 – 7 = 38 – 5 = 95 – 8 = 15 – 4 =

　　5 + 43 = 82 – 50 = 56 – 30 =1 + 90 =

　　2× 7=7× 8 =4× 5 =4× 1=

　　3× 6 =6× 5 =4× 3=5× 5 =

　　5× 2=7× 7=8× 2 =7× 3=

　　6× 3 =3× 3 =8× 3=8× 8 =

　　2×5 – 3 =8×2 + 30 =2 ×2 +2 =56 – 8 – 8 =

　　46 -38 + 25 =5 ×7 + 20 =7×8 – 8 =5×6 – 8 =

　　4×9 + 8 =53＋6－15=6×3 + 6 =8×4 -9 =

　　8×5 -8 =2×8 + 8 =5×5 + 5 =5 ×3 -5 =

　　3×8 + 24 =4 × 6 -10 =2 ×6 + 8 =6 ×7 + 28 =

　　5 ×6 +34 =8 ×3 – 24 =7 ×4 -27 =8 ×4 +32 =