It would be more fun to figure it out by yourself. But let me help you get started. The numbers can be written as ABCDE x 4 = EDCBA. Look at the first "A". If this number is 3 or more, the multiplication by 4 will give you six digits instead of five. So it can only be 1 or 2. Hoever, if you look at the second "A", it has to be even (because the digit "E" is multiplied by 4). So it can only be 2.
For the remaining digits, be sure to remember the numbers that may be carried over from digits further on the right.
2178
There is an infinite number of multiples of 4. Multiples of 4 can be 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, etc. 4 can be multiplied to get those numbers, and that makes them multiples of 4. 4 times 0 equals 0, 4 times 1 equals one, 4 times 2 equals 8, 4 times 3 equals 12, and so on.
2 times 38 equals 76 4 times 19 equals 76
365 times 4 equals 1,460. This is calculated by multiplying the two numbers: 365 × 4 = 1,460.
How about 4*250 = 1000 as one example
2178
Multiply it backwards. 20 divided by 5 equals 4 4 times 5 equals 20
1 times 4 equal 4 2 times 2 equals 4
There is an infinite number of multiples of 4. Multiples of 4 can be 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, etc. 4 can be multiplied to get those numbers, and that makes them multiples of 4. 4 times 0 equals 0, 4 times 1 equals one, 4 times 2 equals 8, 4 times 3 equals 12, and so on.
2 times 38 equals 76 4 times 19 equals 76
365 times 4 equals 1,460. This is calculated by multiplying the two numbers: 365 × 4 = 1,460.
100
How about 4*250 = 1000 as one example
148 times 4 equals 592. To find this, you can simply multiply the two numbers together: 148 × 4 = 592.
Here is the 4 times table up to 12: 1 times 4 equals 4 2 times 4 equals 8 3 times 4 equals 12 4 times 4 equals 16 5 times 4 equals 20 6 times 4 equals 24 7 times 4 equals 28 8 times 4 equals 32 9 times 4 equals 36 10 times 4 equals 41 11 times 4 equals 44 12 times 4 equals 48
The first 4 Numbers in Pi are 3.141 Written backwards- 1413 Written backwards with decimal point- 1.413
eight times two equals 16