0
20*-9 = -180
-180*21 = -3780
-3780*-1 = 3780.
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What numbers are multiply to get 63?
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1
How many times can 21 go into 189?
if you multiply 21 and 9 it equals 189
Math words whose sum is equal to 100?
Pumpkin (16+21+13+16+11+9+14=100) Attitude (1+20+20+9+20+21+4+5=100)
What two numbers multiply to make 378?
1 and 378 2 and 189 3 and 126 6 and 63 7 and 54 9 and 42 14 and 27 18 and 21 21 and 18 42 and 9
3 9 4 5 25 20 21 441?
3 9 4 5 25 20 21 441 ?
What numbers multiply together equal 63?
1, 3, 7, 9, 21 and 63: 1 x 63, 3 x 21, 7 x 9
Numbers to Multiply to get 63?
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1
What numbers are multiply to get 63?
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1
What numbers multiply make 63?
1 x 63, 3 x 21, 7 x 9, 9 x 7, 21 x 3, 63 x 1.
How many times can 21 go into 189?
if you multiply 21 and 9 it equals 189
What are two addend that will equal 20 and if you subtract it you will get 1?
21
What 2 numbers multiply 63?
1 x 63, 3 x 21, 7 x 9
What two numbers multiply to make 189?
1 and 189 3 and 63 7 and 27 9 and 21
What two numbers can you multiply to get 63?
1 x 63, 3 x 21, 7 x 9
What two numbers multiply to get 63?
1 x 63, 3 x 21, 7 x 9
What are all the methods of x 19 and 21?
It is probably impossible to enumerate all the methods. Apart from long multiplication you can have Two-way partitioning: (10 + 9) * (20 + 1) = 200 + 10 + 180 + 9 = 399 This is usually done in a 2x2 grid. Partitioning 21 19*(20 + 1) = 19*2*10 + 19*1 = 38*10 + 19 = 380 + 19 = 399 Partitioning 19 (20 - 1)*21 = 2*10*21 - 1*21 = 42*10 - 21 = 420 - 21 = 399 Or. if you are savvy enough, Difference of two squares (20 - 1)*(20 + 1) = 202 - 11 = 400 - 1 = 399
What is 9 over 10 plus 2 over 5 minus 1over 4?
18/20 + 8/20 - 5/20 = 21/20 or 1 and 1/20
