Indicate which property is illustrated in Step 4.

Step 1

(-8) + 8 + 2 (8 + 2)

=

(-8) + 8 + (2 • 8) + (2 • 2)

Step 2

=

(-8) + 8 + (16) + (4)

Step 3

=

(-8) + 8 + 20

Step 4

=

0 + 20

Step 5

=

20

Which number has the smaller number? - 6 or - 17 and why

Add together 1.5m 1250mm 125cm 1.230m

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