Addition and subtraction within 20 Children's Oral Arithmetic Cards Primary School Grade 10 100 Within Mathematics Number Arithmetic Problem Cards

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Addition and subtraction within 20 (answer version 270 photos)
Addition and subtraction within 20 (double-sided formula without answer full version 270 photos)
Addition and subtraction within 20 (answer version) +99 multiply and divide
Addition and subtraction within 20 (full version without answer) +99 multiplying and dividing
100+50+20 plus+minus (answer version 540 photos)
100+50+20 plus minus+99 multiplication and division (answer version 630 photos)
Addition and subtraction within 20 (answer version) + first-grade upper book literacy card
Addition and subtraction within 20 (answer version) + pinyin card
Addition and subtraction within 20 (answer version) + pinyin cards + first-grade upper book literacy cards
Addition and subtraction within 20 (full version without answers) + first-grade upper book literacy card
Addition and subtraction within 20 (full version without answer) + pinyin card
Addition and subtraction within 20 (full version without answers) + pinyin cards + first-grade upper book literacy cards
Grade 2 99 multiplied by elimination card (90 photos)
Addition and subtraction within 100+50 (270 photos) + send workbook
Full version of 20 addition and subtraction (540 photos)
Addition and subtraction within 20 (large teacher version) (double-sided formula 258 photos)
Within 20 addition and subtraction of the mouth table large table wall chart
Blank cards (270 photos)

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Color classification:: Blank cards (270 cards) Addition and subtraction within 20 (270 answer version) Addition and subtraction within 20 (large teacher version) (double-sided formula 258 pieces) Addition and subtraction within 20 (no answer full version) + Pinyin card + first grade upper book literacy card Addition and subtraction within 20 (no answer full version) + Pinyin card Addition and subtraction within 20 (answer version) + Pinyin card Addition and subtraction within 20 (answer version) + first-grade upper book literacy card 100 + 50 plus and minus (270) + send exercise book Add and subtract within 20 Tables Flip Chart 100+50+20 Addition and Subtraction (Answer Version 540 Pieces) Addition and Subtraction Within 20 (Double-Sided Formula Without Answer Full Version 270 Pieces) Addition and Subtraction Within 20 (No Answer Full Version) + 99 Multiplication and Subtraction Within 20 (Answer Version) + 99 Multiplication and Division Second Grade 99 Multiplication And Subtraction Card (90 Photos) Full Edition Addition and Subtraction within 20 (540 Cards) Addition and Subtraction within 20 (No Answer Full Version) + First Grade Literacy Card Addition and Subtraction Within 20 (Answer Version) + Pinyin Card + Grade 1 Literacy Card 100+50+20 Plus Minus+99 Multiplication and Division (Answer Edition 630)