---
product_id: 261921
title: "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: "NZ$52"
currency: NZD
in_stock: true
reviews_count: 13
url: https://www.desertcart.nz/products/261921-three-corner-addition-and-subtraction-flash-cards-t1670-interactive-self
store_origin: NZ
region: New Zealand
---

# Self-checking for instant feedback 48 durable two-sided triangle cards Teaches addition & subtraction fact families 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:** NZ$52
**Availability:** ✅ In Stock

## Summary

> 🔺 Turn math struggles into wins with every triangle!

## Quick Answers

- **What is this?** 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?** NZ$52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/261921-three-corner-addition-and-subtraction-flash-cards-t1670-interactive-self)

## 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

- • **Fun Solo or Group Play:** Transform study time into an exciting, social learning experience.
- • **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:** Ideal for ages 6-8, supporting 1st to 3rd grade math milestones.
- • **Durable & Kid-Friendly Design:** Thick, easy-to-hold cardstock cards built to survive enthusiastic learners.

## Overview

These 48 two-sided, durable triangle flash cards from Trend Enterprises teach kids ages 6-8 the relationship between addition and subtraction through interactive, self-checking fact families. Designed for 1st to 3rd graders, they offer a fun, hands-on way to master math facts up to 12, perfect for solo or group learning.

## 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 | #170,063 in Toys & Games ( See Top 100 in Toys & Games ) #1,112 in Educational Flash Cards |
| Brand Name | Trend Enterprises |
| Customer Reviews | 4.7 out of 5 stars 1,236 Reviews |
| Educational Objective | Math Skills |
| Global Trade Identification Number | 00078628940428 |
| Included Components | Three Corner Flash Cards |
| Item Dimensions | 6.5 x 2 x 6.5 inches |
| Item Dimensions L x W | 6.5"L x 2"W |
| Item Type Name | Flash Card |
| Manufacturer | TREND ENTERPRISES, INC. |
| Manufacturer Maximum Age (MONTHS) | 96 |
| Manufacturer Minimum Age (MONTHS) | 72 |
| Manufacturer Part Number | T1670 |
| Material Type | Cardstock |
| Model Number | T1670 |
| Number of Pieces | 1 |
| School Type | Elementary School |
| Set Name | Three-Corner Addition and Subtraction |
| Size | 6.5 H x 1.0 L x 6.5 W |
| Sub Brand | Flash |
| Theme | Mathematics |
| UPC | 078628940428 778888085081 190259407023 |
| Unit Count | 1.0 Count |

## Images

![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)

## 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)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-07-02*