Answer:
Estimate: 22,400
Actual Product: 21,828
Explanation:
To estimate the product of 68 and 321 by rounding to the nearest ten, you can round 68 to 70 and round 321 to 320. Then you can find the product of 70 and 320:
70 × 320 = 22,400
This is an estimate of the actual product.
To find the actual product, you can multiply 68 and 321:
68 × 321 = 21,828
Therefore, the estimate is 22,400 and the actual product is 21,828.