2050 ÷ 25 =

(a)  

75 × 75 =

(a)  

8 600 ÷ 50 =

(a)  

2.9 × 430 =

(a)  

773 – 697 =

(a)  

81 × 81 =

(a)  

99 + 18 + 97 + 62 + 23 =

(a)  

63 × 67 =

(a)  

9 + 9 + 2 + 3 + 4 + 4 + 7 + 8 + 5 + 6 =

(a)  

45.5 ÷ 3.5 =

(a)  

240 ÷ 1.5 =

(a)  

107 × 105 =

(a)  

94 × 101 =

(a)  

257 – 98 =

(a)  

207 × 203 =

(a)