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It may be the first time a math problem has gone viral on the Internet.

A frustrated father posted a subtraction problem from his second-grade son’s math quiz on Facebook this week with a note to the teacher calling it ridiculous. Conservative pundits, including Glenn Beck, seized on it as evidence that the new standards are nonsensical and “stupid,” adding more fuel to the backlash against the Common Core as it rolls out in schools across the country.

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The problem asks how Jack, a fictional student, miscalculated when he used a number line to find the answer to the subtraction problem 427 – 316. Students are then asked to write a letter to Jack explaining what he did right and what he did wrong.

Critics say the problem takes a simple one-step subtraction problem and turns it into a complex endeavor with a series of unnecessary steps, including counting by 10s and 100s. The father, Jeff Severt, who has a bachelor’s in engineering, told Beck the problem was particularly difficult for his son, who has autism and attention disorders and trouble with language arts. He said that after spending two frustrating hours going over the earlier pages of his son’s math quiz, he was stumped by the problem himself.

Common Core math problem
(Photo: Facebook/The Patriot Post)

So why is the problem so difficult? The Hechinger Report asked a couple of the lead writers of the Common Core math standards, Jason Zimba and William McCallum.

Their response? Don’t blame Common Core. Blame a poorly written curriculum.

“That question would not be in a textbook if I wrote it,” Zimba said.

McCallum, math department chair at the University of Arizona, had some of the same concerns about the problem as the conservative critics.

“It’s a complete reversal of the truth to call this a Common Core problem,” he said. What Common Core actually requires, McCallum argues, is fluency in the simple skills of adding and subtracting that critics are calling for. “Complaining that this is a Common Core method, when the Common Core doesn’t require this method, but does require the method he wants, it’s just a lie,” he added.

The question appears to be aiming for several of the main Common Core math standards for second grade:

1) A requirement that students understand place value, for instance, that “100 can be thought of as a bundle of ten tens — called a ‘hundred.’”

2) That students be able to “add and subtract within 1000, using concrete models or drawings and strategies based on place value … and relate the strategy to a written method.” Also that they “understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.”

3) That they can “explain why addition and subtraction strategies work, using place value and the properties of operations.”

4) And that they can “represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, …, and represent whole-number sums and differences within 100 on a number line diagram.”

In general, being able to explain how you arrived at an answer – not just memorizing a formula – is also one of the standards’ key goals for students.

In the math problem encountered by Severt’s son, “What the kid did is kept subtracting 10. So they didn’t go down to the smaller unit. And whoever is looking at the problem is supposed to see that the student was confused about place value,” said McCallum. “A discussion in the classroom is supposed to talk about how 10 is 10 times bigger than one, and 100 is 10 times bigger than 10.”

But mashing together the different standards for place value and the number line is potentially confusing. “The number line is not an appropriate model for place value,” Zimba said.

The writing component is also problematic. “The standards don’t require essay writing in mathematics,” Zimba said.

The problem the question highlights is not an issue with the Common Core itself, McCallum said, but rather one of curriculum. Textbook publishers, smaller startups, school districts and teachers are all grappling with how best to incorporate the standards into the lesson plans, classroom activities, homework and quizzes that students encounter on a daily basis.

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So far, there has been little quality control. Some of the new curricula labeled Common Core include high quality materials that match well with the standards, but many don’t, supporters of the standards say.

“Like it or not, the standards allow a lot of freedom. People think the Common Core is a curriculum, and it’s not. The curriculum authors are going to interpret the standards in different ways,” Zimba said.

“There will be a lot of variety, and it doesn’t make sense to me to pick one thing and say that’s the Common Core,” he added. “Particularly something that doesn’t get at the mathematics that’s being emphasized in the Common Core.

This post has been updated.

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  1. My oldest granddaughter was born about 10 years ago. Since I was in charge of middle of the night feedings and everyone is sleeping and I sing terrible, I began to count my fingers out loud. holding my right hand up starting with my pinky,ring,middle,index and thumb. Then thumb,index,middle and so forth. then I threw a curve in and held only three fingers on the left hand first this time and three fingers one right. She immediately tried to lift the pinky on my right hand to make it seven. she managed to do that at just six or seven weeks old.

    This year she not so intrigued with math.

  2. It really shouldn’t be too surprising that that CCSS is having so many unhappy with it. 46 states signed on to it and they all did it sight unseen. That’s right. They didn’t review and think it was a really good idea. They accepted a plan that had not even been put together yet. This was never voted on by states (governor) or by Congress. I believe at this time at least 23 states are trying to withdraw from it. I hope something big happens to stop it completely.

  3. The difficulty with the CC Math comes down to which state you live in. For some states the math standards are a big leap from what their former standard were and for others it is a small hop. People are rallying other parents to complain about the math and how it is solved, instead of wanting to sit down with their teacher or admin to have it explained to them. You can’t change an angry parents’ mind when they really don’t want to know. I am disgusted by the words parents are using toward teachers. Teachers are professionals and should be treated as such. Would these same parents walk into their doctors office, attorney’s office or car dealership for that matter, speaking they way they do to teachers? Wake up America, the world is passing us by!! We need problem solvers and students who value their own education without thier own parents getting in the way.

  4. Education for students would also be better when teachers share classes. Great math teachers, especially in elementary school, should teach math. Gifted ELA teachers should teach ELA. Social Studies, Science and History should be taught by teachers who love teaching those subjects (and are good at it). We should have P.E. teachers as well. Classroom management expectations and procedures must be universal across classrooms and the campus, not exceptions. Problem students who constantly disrupt the learning environment must be removed immediately from that learning environment, no exceptions. Students continue to disrupt the classroom when they are allowed to do so. They throw chairs, toss over desks, tear up student work and tear down classroom boards, because they are allowed to do so. Why do I have to vacate my classroom when a student decides to trash it. That student is then in charge and enjoying what they are doing. When they don’t want to learn, they destroy the classroom to stop the learning process. Absolutely ridiculous!

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