--- product_id: 261921 title: "Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, T1670, Interactive Self-Checking, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up" brand: "trend enterprises" price: "978207₫" currency: VND in_stock: true reviews_count: 13 url: https://www.desertcart.vn/products/261921-trend-enterprises-three-corner-addition-and-subtraction-flash-cards-t1670 store_origin: VN region: Vietnam --- # 48 durable two-sided triangle cards Teaches addition & subtraction fact families Interactive self-checking design Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, T1670, Interactive Self-Checking, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up **Brand:** trend enterprises **Price:** 978207₫ **Availability:** ✅ In Stock ## Summary > 🔺 Turn math drills into thrilling skill-building adventures! ## Quick Answers - **What is this?** Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, T1670, Interactive Self-Checking, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up by trend enterprises - **How much does it cost?** 978207₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/261921-trend-enterprises-three-corner-addition-and-subtraction-flash-cards-t1670) ## Best For - trend enterprises enthusiasts ## Why This Product - Trusted trend enterprises brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Interactive Self-Checking:** Instant feedback keeps kids engaged and confident without extra help. - • **Master Math Fact Families:** Unlock the secret link between addition and subtraction effortlessly. - • **Perfect for Early Learners:** Tailored for ages 6-8, ideal for 1st to 3rd graders mastering core math skills. - • **Boosts Group & Solo Learning:** Versatile for classroom, tutoring, or home use—make math a social win. - • **Durable & Kid-Friendly Design:** Thick, easy-to-hold 5.5" triangle cards built to last through countless study sessions. ## Overview Trend Enterprises’ Three-Corner Addition and Subtraction Flash Cards feature 48 durable, two-sided triangle cards designed for kids ages 6 to 8. These interactive, self-checking cards teach the relationship between addition and subtraction through fact families, making math practice engaging and effective for early elementary learners. ## Description Product Description These cards allow students to learn the relationship between operations. Each three corner flash card teaches a family of facts. Each set has two operations and 46 two sided cards. Standard focus: addition and subtraction computation, fact families. Sold as single unit. Self-checking cards. Helps students learn addition and subtraction And the relationship between them. Covers facts through 12. Includes 46 two-sided cards. From the Manufacturer Kids react with excitement to these unique flash cards that teach 2 math operations and the relationship between them. Self-checking cards include addition and subtraction facts through 12. 48 two-sided cards (5 1/2" triangles). Durable and easy to hold. Great for solo or group play. Review: Nice quality - Good quality cards. Perfect for helping my child to see and memorize “fact families.” He also is more willing to do these with me than traditional math flash cards. I appreciate the plastic holder they come in. Way better than sliding cards in and out of a cardboard box that always ends up ripping. Review: Love these - We love these 3 corner flash cards. We also have the addition/multiplication set. We like to use these over all other flash cards that we have tried. They make it easy and fun. They are very thick, durable cards. Perfect size. ## Features - 48 Two-sided triangle cards - Teaches addition and subtraction and the relationship between them - Ideal for 1st Grade to 3rd Grade - Ages 6 to 8 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0006HXTY6 | | Age Range (Description) | Kid | | Best Sellers Rank | #193,164 in Toys & Games ( See Top 100 in Toys & Games ) #1,264 in Educational Flash Cards | | Customer Reviews | 4.7 4.7 out of 5 stars (1,236) | | Department | Bedroom | | Global Trade Identification Number | 00078628940428 | | Is Discontinued By Manufacturer | No | | Item Weight | 5.6 ounces | | Item model number | T1670 | | Manufacturer | TREND ENTERPRISES, INC. | | Manufacturer Maximum Age | 96 | | Manufacturer Minimum Age (MONTHS) | 72 | | Manufacturer recommended age | 6 - 8 years | | Number of Pieces | 1 | | Product Dimensions | 6.5"L x 2"W | | Release date | April 4, 2023 | | School type | Elementary School | | Sub Brand | Flash | | UPC | 078628940428 778888085081 190259407023 | ## Images ![Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, T1670, Interactive Self-Checking, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up - Image 1](https://m.media-amazon.com/images/I/71lWqQi0BBL.jpg) ![Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, T1670, Interactive Self-Checking, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up - Image 2](https://m.media-amazon.com/images/I/51-UrlAIbtL.jpg) ![Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, T1670, Interactive Self-Checking, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up - Image 3](https://m.media-amazon.com/images/I/61efXIOPuqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Nice quality *by A***O on July 9, 2020* Good quality cards. Perfect for helping my child to see and memorize “fact families.” He also is more willing to do these with me than traditional math flash cards. I appreciate the plastic holder they come in. Way better than sliding cards in and out of a cardboard box that always ends up ripping. ### ⭐⭐⭐⭐⭐ Love these *by M***E on December 19, 2025* We love these 3 corner flash cards. We also have the addition/multiplication set. We like to use these over all other flash cards that we have tried. They make it easy and fun. They are very thick, durable cards. Perfect size. ### ⭐⭐⭐⭐⭐ New way of doing addition & subtraction *by M***W on August 15, 2024* Great learning tool at home since the triangle method is being used in schools. ## Frequently Bought Together - Trend Enterprises: Three-Corner Addition and Subtraction Flash Cards, Interactive Self-Checking Cards, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 6 and Up - Trend Enterprises: Three-Corner Multiplication and Division Flash Cards, Interactive Self-Checking Cards, Exciting Way for Everyone to Learn, 48 Two-Sided Cards Included, Ages 8 and Up - Learning Resources Write & Wipe Fact Family Boards, Set of 5 Boards, Ages 6+, Multicolor, 10 H in (LER3799) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/261921-trend-enterprises-three-corner-addition-and-subtraction-flash-cards-t1670](https://www.desertcart.vn/products/261921-trend-enterprises-three-corner-addition-and-subtraction-flash-cards-t1670) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-18*