Round 23,421 to the nearest thousand and ten thousand

23,421 to the nearest thousand will be 23,000.

23,421 to the nearest ten thousand will be 20,000.

Step-by-step explanation:

We have to round 23,421 to the nearest thousand and ten thousand.

23,421 to the nearest thousand will be 23,000.

3000 because, the hundreds digit is 4 which is less than 4, so it will be rounded to 0.

23,421 to the nearest ten thousand will be 20,000.

Here, the thousand place is 3 which is less than 5 so, the numbers are rounded to 0.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.