jkaovv jkaovv 30-08-2022 Mathematics contestada 21. THINK SMARTER 21a, 600 is For 21a-21c, choose True or False for each sentence. of 6,000. 21b. 67 is of 6,700. 21c. 1,400 is 10 times as much as 140. O True O True O True O False O False O False