strategic number counting drill and practice detect-practice

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S TRA TE G I C NU MBE R C O U NTI NG

D RI L L A ND PRA C TI C E

D E TE C T- PRA C TI C ERE PA I R

9 1 2 83 6 5

C O VE R- C O PY C O MPA RE

RE C I PRO C A L PE E R TU TO RI NG

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