Show:
2 Digit Addition
3 Digit Addition
3 2-digit Addition
4 2-digit Addition
100

68 + 32

100

100

109 + 73

182

100

16 + 21 + 10=

47

100

44+12+10+32 = 

98

200

92 + 29 = 

121

200

287 + 142=

429

200
24 + 42 + 65=

131

200

10+10+23+18=

61

300

37 + 46 = 

83

300

500 + 700= 

1,200

300

19 + 90 + 11=

120

300
22+18+19+10=

79

400

99 + 11 =

110

400

889 + 111=

1,000

400

88 + 22 + 13 = 

123 

400

28+24+22+20=

94

500

82 + 28 =

110

500

345 + 345 = 

690

500

43 + 12 + 7=

62

500

12+23+23+12=

70