6,310 + 11,792 = ?

(a)  

519 - 345 = ?

(a)  

68,654 - 45,684 = ?

(a)  

9,000 + (7,000 - 3,000) = ?

(a)  

302 $$\times$$ 4   = ?

(a)  

4,321 $$\times$$ 5   = ?

(a)  

2 $$\times$$ 10 $$\times$$ 5   = ?

(a)  

72 $$\div$$  8   = ?

(a)  

370 $$\div$$  2   = ?

(a)  

(15 $$\div$$  3) $$\times$$  3   = ?

(a)  

41 $$\times$$  37   = ?

(a)  

(25 $$\times$$  20) $$\div$$ 5    = ?

(a)  

7 + 9 + 11 + 13 + 15    = ?

(a)  

723 $$\div$$  3    = ?

(a)  

2,468 - (1,658 + 794)    = ?

(a)  

(28 $$\times$$   7) - 131    = ?

(a)  

(34 + 432) $$\div$$  6    = ?

(a)  

(5 $$\times$$ 6) + (5 $$\times$$ 6) + (5 $$\times$$ 6)  = ?

(a)  

(31 $$\times$$ 6) + (155 $$\div$$ 5 )  = ?

(a)