Numihana84 + 147 =
HTO
84
+147
LEARN, PRINT & PRACTISE
Column addition.
Use aligned written columns to add numbers up to three digits.
Numihana · England Year 3
Column addition
Practice sheet
Name: ______________
Date: ______________
Use aligned written columns to add numbers up to three digits.
609 + 808 =
ThHTO
609
+808
819 + 3 =
HTO
819
+3
330 + 277 =
HTO
330
+277
683 + 845 =
ThHTO
683
+845
703 + 369 =
ThHTO
703
+369
Numihana · England Year 3
Column addition
Answer key
Name: ______________
Date: ______________
Use aligned written columns to add numbers up to three digits.
84 + 147 =
HTO
11
84
+147
231
609 + 808 =
ThHTO
11
609
+808
1417
819 + 3 =
HTO
1
819
+3
822
330 + 277 =
HTO
1
330
+277
607
683 + 845 =
ThHTO
11
683
+845
1528
703 + 369 =
ThHTO
11
703
+369
1072
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The skill behind this activity
Use aligned written columns to add numbers up to three digits.
Department for Education: mathematics programmes of study ↗
Year 3 → Number → Addition and subtraction · Selected statutory skill. Pack 2.2.0 · source checked 2026-10-12.
For teachers and parents
Combine the quantities. Align equal place values for a written column method; each group of ten becomes one in the next place.
A common slip
A carried ten belongs one place to the left and is counted once.
Worked example
44 + 503 =
HTO
44
+503
547
Combine the quantities. Align equal place values for a written column method; each group of ten becomes one in the next place.