what is 2/3 of 21 ?
2007-01-20 17:24:29 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
14
2007-01-20 17:26:35 · answer #1 · answered by David 3 · 2⤊ 0⤋
Cancel out the 3 and 21:
2*7=14
2007-01-21 02:51:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
21/ 3= 7. and 7*2= 14
2007-01-21 01:28:12 · answer #3 · answered by Anonymous · 1⤊ 0⤋
2/3 of 21 is 14. (2/3*21)
2007-01-21 01:27:59 · answer #4 · answered by cincinnati421 2 · 1⤊ 0⤋
First: make 21 a fraction > place 21 over 1...
(2/3) of (21/1)
Sec: "of" means to multiply > (2/3)(21/1)
Third: multiply the numerators & denominators...
(2*21)/(3*1)
42/3
= 14
2007-01-21 01:31:39 · answer #5 · answered by ♪♥Annie♥♪ 6 · 1⤊ 0⤋
Multiply the values
2/3 * 21
= 2/3 * 63/3 (to have equal denominators)
= 126/9
= 14
2007-01-21 01:28:31 · answer #6 · answered by Donny Dutch 4 · 1⤊ 0⤋
Problems like this are solved by multiplying 2/3 by 21. To multiply a whole number by a fraction, you multiply the whole number by the numerator(top number), then divide that product by the denominator(bottom number). Think about how the problem could be spoken, if your think about 2/3 as a division problem instead of as a fraction.
"21 times two-thirds" does me no good, BUT...
"21 times two divided by three" helps me out. I can multiply 21 by 2 and get 42, then divide 42 by 3 and get your answer of 14.
2007-01-21 01:30:52 · answer #7 · answered by cubs_woo_cubs_woo 3 · 1⤊ 0⤋
2/3 of 21 = (2/3)(21) = (21x2)/3
7 x 3 = 21... Therefore, 21/3 = 7
7 x 2 = 14
Hence, 2/3 of 21 is 14
2007-01-21 01:30:16 · answer #8 · answered by Adrianne G. 2 · 1⤊ 0⤋
14.
If you divide 21 into three equal parts (that is, three "thirds"), and then take two of those parts, you will have 2/3 (two thirds) of it.
Dividing 21 by 3 gives you 7. So each part is 7, and two parts of seven equals 14. Thus, 2/3 of 21 is 14.
God bless.
2007-01-21 01:26:42 · answer #9 · answered by Anonymous · 1⤊ 0⤋
14. You can either divide by 3 then multiply by 2 or multiply by 2/3. 1/3 is 7, so 2/3 must be 14.
2007-01-21 01:28:43 · answer #10 · answered by stephieSD 7 · 1⤊ 0⤋