$6487+1259=$  

(a)  

 $1432+3041+415=$  

(a)  

 $4745+2047+1359=$  

(a)  

 $8679-4357=$  

(a)  

 $6426-2279=$  

(a)  

 $3716-1848=$  

(a)  

 $6769-2142-2324=$  

(a)  

 $4122-1514-1708=$  

(a)  

 $7564-3132+1244=$  

(a)  

 $4232+2645-3567=$  

(a)  

 $5336-2734+4688=$  

(a)  

 $3554+3468-3864=$  

(a)  

 $72\times4=$  

(a)  

 $210\times9=$  

(a)  

 $1202\times5=$  

(a)  

 $326\times7=$  

(a)  

 $2156\times3=$  

(a)  

 $743\times10=$  

(a)  

 $92\times100=$  

(a)  

 $710\times10=$  

(a)  

 $76\div4=$  

(a)  

 $364\div7=$  

(a)  

 $118\div3=$  

(a)  

 $7308\div9=$  

(a)  

 $2654\div5=$  

(a)  

 $3010\div10=$  

(a)  

 $5700\div100=$  

(a)  

 $4000\div1000=$  

(a)  

 $2090\div1000=$  

(a)