What is place value well place value is like this so for example.
684 - 572 = 112
600 - 500 = 100
80 - 70 =10
4 - 2 = 2
And now we are done with the first one.
6685 - 5353 = 1332
6000 - 5000 = 1000
600 - 300 = 300
80 - 50 = 30
5 - 3 = 2
And now we are done with the second one.
67848 - 6734 = 61114
60000 - 0 =60000
7000 - 6000 = 1000
800 - 700 = 100
40 - 30 = 10
8 - 4 = 4
Goal L3: use a broad range of mental strategies to solve
addition and subtraction problems.
addition and subtraction problems.
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