ryandougherty.bsky.social
@ryandougherty.bsky.social
I broke 15 into 10 and 5.

10 x 36 = 360 (Full circle)
5 x 36 = 180 (Half circle)

From watching the Olympics, I know a 1.5 rotation is called a 540, and 360 + 180 = 540
November 24, 2025 at 6:10 PM
I added all the tens first to get 40. I was left with 3+5+7+9.

3+7= 10 (add that to my 10's group to now have 50)
5+9= 14 (another ten to get 60)

60 + 4 = 64
October 20, 2025 at 4:11 PM
I made all the numbers 20. 20 x 5 = 100

Then, subtracted 4, 3, 2, and 1.

100 - 10 = 90
September 29, 2025 at 3:35 PM
A second way (not my preferred, but a different way to solve it.)
September 22, 2025 at 5:43 PM
First way I saw it was --

6+9 = 15
7+8 = 15

15+15 = 30
September 22, 2025 at 5:42 PM
Three 7's is 21
Two 5's are 10

21 + 10 = 31
August 25, 2025 at 3:53 PM
Start by rearranging the problem into 3 smaller problems.

2x5=10
2x5=10
3x3=9

Use those products again
10x10= 100
10x9=900
August 18, 2025 at 4:32 PM
I divided the entire problem by 2 to get 500 ÷ 4.

I saw it as $5.00 ÷ 4. Each area gets 1 dollar, then each area gets 0.25¢.

1000 ÷ 8 = 125
August 11, 2025 at 5:30 PM
If 6 stickers cost $4.50, how much do 2 stickers cost?

$4.50 ÷ 3 = $1.50

2 stickers cost $1.50, and we need 10 times that amount.

2 X 10 = 20
$1.50 X 10 = $15.00
July 21, 2025 at 3:55 PM
14/40 = 7/20
7/20 = 3.5/10
3.5/10 = 35/100
35/100 = 35%
July 21, 2025 at 3:38 PM
Like your subtraction post the other day. Change the numbers to make them easier.

89 + 17 becomes 90 + 16

90 + 10 = 100
100 + 6 = 106

89 + 17 = 106
July 7, 2025 at 4:46 PM
Change the problem to 20 x 8. 20 x 8 = 160

I know I have 2 groups of 8 more than I need. 2 x 8 = 16

Subtract the extra. 160 - 16 = 144
June 23, 2025 at 4:49 PM