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Subtraction Across Zeroes By Jamie Unverzagt
Hundreds Tens Ones Let’s model 102 minus 38. Begin by showing 102.
Hundreds Tens Ones If you have 2 ones, can you take away 8 ones?
Hundreds Tens Ones How can you get more ones? There are no tens to trade!
Hundreds Tens Ones How many tens are in a hundred?
Hundreds Tens Ones Hundred is the same as 10 tens! Good thinking!
Hundreds Tens Ones Now can you get more ones?
Hundreds Tens Ones How many tens and ones now? 912
Hundreds Tens Ones What’s the next step? How many ones are left?
Hundreds Tens Ones What’s the next step? How many tens are left? 6
Hundreds Tens Ones Let’s model 203 minus 57. Begin by showing 203.
Hundreds Tens Ones If you have 3 ones, can you take 7 ones away?
Hundreds Tens Ones If 10 tens are in one hundred, how many tens are in two hundreds? 10 tens + 10 tens = 20 tens
Hundreds Tens Ones Can you trade one of the 20 tens for ones? How many tens are left? 20 tens- 1 ten = 19 tens
Hundreds Tens Ones That’s 19 tens left 19 tens 19 which is the same as 1 hundred and 9 tens.
Hundreds Tens Ones How many ones do you have now? 1913
Hundreds Tens Ones What is 13 ones minus 7 ones?
Hundreds Tens Ones Finish subtracting You’ve Got It!
Subtract Across Zeroes
Subtract Across Zeroes
Subtract Across Zeroes Slow Down! Don’t regroup if you don’t have to!
Subtract Across Zeroes
Place Value Ones, Tens, and Hundreds. Ones The same as counting by ones How many ones or units do you see? 6.
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Of. and a to the in is you that it at be.
Bridging through 10 Learning objectives: To begin to bridge through 10 when adding a single digit number.
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L.O.1 To be able to derive quickly division facts corresponding to tables up to 10x10.
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The. of and a to in is you that it he for.
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How to subtract integers. Why change to addition problem Subtraction is the opposite of addition So we make things opposite.
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