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Grade 3 Addition Worksheets

Three-digit addition brings chained regrouping — ones to tens to hundreds. Twenty problems with visible carries is a full lesson; the answer key exists so checking takes minutes, not an evening.

Three-Digit Addition

1.186+4702.991+2293.318+9364.979+2915.879+7736.963+2267.205+6708.297+4589.774+96410.176+21311.186+55312.491+21813.215+98614.416+59515.720+91516.311+61517.664+69518.109+28719.179+38320.450+607
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1.186+4706562.991+22912203.318+93612544.979+29112705.879+77316526.963+22611897.205+6708758.297+4587559.774+964173810.176+21338911.186+55373912.491+21870913.215+986120114.416+595101115.720+915163516.311+61592617.664+695135918.109+28739619.179+38356220.450+6071057
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