Michelle

[Michelle @MichellGreb066]

@gerryvarty @pwharris The visual aids are great!

[Michelle @MichellGreb066]

@pwharris If 3/4 of a number is 6, then 1/4 of the number would be 2 and the whole number would be 2 x 4 which is 8. So half of that number is 4.

[Michelle @MichellGreb066]

@pwharris Knowing that I can commute this to 75% of 88 is really slick! 25% of 88 is 22 and I only have to triple 22. The almost instant answer is 66.

[Michelle @MichellGreb066]

@pwharris Switching to 125% of 16 suits me. 100% of 16 is 16 and 25% of 16 is 4, so 125% of 16 is 20. 😃

[Michelle @MichellGreb066]

@pwharris I didn't see this until today, but if it's never too late, I switched it to 110% of 44, which I never would have known you could a few years ago. So 100% of 44 is 44 and 10% of 44 is 4.4, and together it is 48.4.

[Michelle @MichellGreb066]

https://t.co/hJs5UDo44o

[Michelle @MichellGreb066]

@Bedford_Mrs @SteveWyborney @agnesfalcons @HCMaltonDPCDSB We do a mystery every week! My students love it!

[Michelle @MichellGreb066]

@pwharris Thinking of 2.8 as $2.80 and seeing the other term as 5 ¢ short of $2.00, I transfered a nickel to make the calculation a friendlier one: $2.75 + $2.00, which is $4.75 or 4.75.

[Michelle @MichellGreb066]

@pwharris 4 + 3 = 7 but that is 5 hundredths too much. So to adjust 7 - 0.05 is 6.95

[Michelle @MichellGreb066]

@pwharris It's intuitive to me to add 3 to 4.3 for a (slightly) over strategy resulting in 7.3. Since I added one tenth too much, I subtract it and get 7.2 😃.

[Michelle @MichellGreb066]

This contest has great prizes for math teachers! https://t.co/6hK8wNp9od

[Team Wipebook @Wipebook]

🎉 Summer Reading Grand Giveaway! ��️📚

Win an epic Summer Math Kit packed with top math books, Wipebook tools, and Apple AirPods!

🚀 How to Enter:
1️⃣ Sign up: https://t.co/Womp0oKy24
2️⃣ Follow: @wipebook , @joboaler, @NowaTechie , @pwharris, @AmyLucenta, @Lempp5
3️⃣ Share & Comment: Tag a friend

🎁 Prizes
- Apple AirPods
- Math books by top educators.
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✨ Don’t miss out! Winner announced May 26!

📍 U.S. & Canada only | May 12–25, 2025

[Michelle @MichellGreb066]

@Wipebook @joboaler @NowaTechie @pwharris @AmyLucenta @Lempp5 These resources look amazing!

[Michelle @MichellGreb066]

@openmiddle Embed

[Michelle @MichellGreb066]

@pwharris This is only 1/8 short of 16 x 8/8, which is 16. 1/8 of 16 is 2, so result is 2 less than 16, or 14.

[Michelle @MichellGreb066]

@ccampbel14 @pwharris My faves are #1 and #3.

[Michelle @MichellGreb066]

@pwharris If I take a third of 9 and a triple of 2/3, then I have 3 x (6/3) which is 6.

[Michelle @MichellGreb066]

@YohakuPuzzle Spoiler alert

[Michelle @MichellGreb066]

@pwharris My first thought was to see 3 twelves + 4 twelves, which is 7 twelves. Then I thought of 9 fours + 12 fours which is 21 fours. I like them both because I know 7 x 12 and 21 is not hard to quadruple to get 84.

[Michelle @MichellGreb066]

@ccampbel14 @pwharris This is a good example of not all sophisticated strategies being equally efficient depending on the question.

[Michelle @MichellGreb066]

@pwharris First thought was to try 3 (9)+11 (9) =14 (9), but it is not as elegant as 27 + 100, then minus one. Either way, it is 126.