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Adding and Subtracting Two-Digit Numbers

1st Grade · Math · UK National Curriculum

10 lessons

Goal

Add and subtract pairs of two-digit numbers using partitioning, column representations, and mental strategies.

10 lessons
0 of 10 done
  1. Adding Two Two-Digit Numbers Without RegroupingUp next
  2. Adding Two-Digit Numbers by PartitioningNot started yet
  3. Adding Two Two-Digit Numbers with Exchanging OnesNot started yet
  4. Adding Two-Digit Numbers Mentally (With Regrouping)Not started yet
  5. Subtracting Two-Digit Numbers Without ExchangeNot started yet
  6. Subtracting Two-Digit Numbers on an Open Number LineNot started yet
  7. Subtracting Two-Digit Numbers Exchanging a TenNot started yet
  8. Finding the Difference Between Two-Digit NumbersNot started yet
  9. Solving Addition and Subtraction Problems with Bar ModelsYou are here
  10. Solving Two-Step Addition and Subtraction Word ProblemsNot started yet
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Learning standards covered

gbUK-NC-MATH-34National Curriculum (England) · Math · 1st Grade

solve problems with addition and subtraction: using concrete objects and pictorial representations, including those involving numbers, quantities and measures

Open Global Standard:OGM.3.OA.2
GlobalOGM.3.OA.2