Three-Digit Addition QuizOnline version Practice adding three-digit numbers. by Arnab Biswas 1 What is 143 + 267? a 420 b 457 c 410 d 399 2 What is 305 + 764? a 1095 b 1009 c 1065 d 1069 3 What is 512 + 883? a 1280 b 1410 c 1395 d 1325 4 What is 999 + 888? a 1890 b 1789 c 1870 d 1887 5 What is 431 + 269? a 721 b 750 c 700 d 689 6 What is 764 + 293? a 1057 b 1060 c 1010 d 1050 7 What is 512 + 138? a 650 b 690 c 640 d 663 8 What is 999 + 999? a 1998 b 1899 c 1999 d 2000 9 What is 123 + 789? a 902 b 912 c 812 d 1002 10 What is 205 + 476? a 680 b 681 c 690 d 700