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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 OnesYou are here
  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 ModelsNot started yet
  10. Solving Two-Step Addition and Subtraction Word ProblemsNot started yet
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Learning standards covered

gbUK-NC-MATH-39National Curriculum (England) · Math · 1st Grade

add and subtract numbers using concrete objects, pictorial representations, and mentally, including: two two-digit numbers

Open Global Standard:OGM.3.NBT.7
GlobalOGM.3.NBT.7