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This worksheet covers Adding Within 1,000, which is part of the Addition module in the Elementary Math course. Practice problems are designed to strengthen key concepts and build confidence.
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Set 5 — Mastery
What is the sum of 345 and 678? [ 345 + 678 = ? ]
1023
1013
1015
1033
Calculate the result of 256 + 489. [ 256 + 489 = ? ]
745
735
765
755
What is 732 + 189? [ 732 + 189 = ? ]
921
911
931
901
Find the sum of 456 and 234. [ 456 + 234 = ? ]
690
700
680
660
What is 812 + 175? [ 812 + 175 = ? ]
987
895
975
965
Calculate 645 + 298. [ 645 + 298 = ? ]
943
953
933
923
What is 721 + 128? [ 721 + 128 = ? ]
849
839
859
829
What is the sum of 890 and 67? [ 890 + 67 = ? ]
957
947
967
937
What is 530 + 470? [ 530 + 470 = ? ]
1000
900
1100
1010
Find the sum of 412 and 289. [ 412 + 289 = ? ]
701
711
691
681
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