Estimate the product by rounding the factors to the nearest tens
![Estimate The Product By Rounding The Factors To The Nearest Tens class=](https://ph-static.z-dn.net/files/d31/90031a732225f11855d24b810bdf4ce7.jpg)
Answer:
1.) 70 2.) 90
20 30
____ ____
1400 2700
4.) 570 5.) 790
30 50
_____ ______
17100 39500