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Today we are going to learn to add 2 and 3 digit numbers using partitioning.

Today we are going to learn to add 2 and 3 digit numbers using partitioning. Remember hundreds, tens and units!. What strategies would you use to add 2 two-digit numbers quickly?. This is one way to do it. Split the tens. Split the units. Count on. 72+15=.

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Today we are going to learn to add 2 and 3 digit numbers using partitioning.

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  1. Today we are going to learn to add 2 and 3 digit numbers using partitioning. Remember hundreds, tens and units!

  2. What strategies would you use to add 2 two-digit numbers quickly? • This is one way to do it. • Split the tens. • Split the units. • Count on.

  3. 72+15= • Split the tens. Split the units. • 70 + 10= 80 • 80+2=82 • 82+5= 87

  4. 43+56= • Split the tens. Split the units. • 40 + 50= 90 • 90+3=93 • 93+6= 99

  5. 143+234= • Split the hundreds. Split the tens. Split the units. • 100 + 200= 300 • 300+40=340 • 340+30=370 • 370+3=373 • 373+4= 377

  6. Work out the answers before the questions disappear! 96 21+63= 45+51= 84 873 231+642= How well did you get on?

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