Addition of decimal numbers

 $1.24\ +2.69$  

• 3.93

• 15.09

• 28.14

• 393

 $10.87+20.48$  

• 12.918

• 21.567

• 31.35

• 3145

 $10.2+15.79$  

• 2.599

• 11.779

• 25.99

• 1681

 $64.9+0.05+3.833$  

• 68.783

• 69.233

• 73.733

• 4487

 $3.452+9.74+29.338$  

• 16.1258

• 32.8874

• 33.764

• 42.53