﻿ Mathcounts Answer Keys

# San Benancio Mathcounts

September 4, 2013

# 2013 Mathability at Washington and Mathcounts at San Benancio sign-up

If your child will be attending Mathability at Washington Union or Mathcounts at San Benancio, please fill out the 2013 Mathability/Mathcounts sign up sheet.

# MATH*Ability at home via email

MATH*Ability is a basic math program that teaches children how to master basic arithmetic skills. The program has developed a successful track record and is available via email.
February 23, 2013

# Russian Meteor

A meteor slammed into Russia last week. Within the week, Stefan Geens, used basic trig to plot a flight path for the meteor..

He posted a Google Earth KMZ file that shows his plot. I've taken that KMZ file and added the Korkino cement factory data as well as an overlay of a satellite photo published by the Baltimore Sun

I used the boundary printed on the satellite photo but have adjusted it southward while maintaining its rotation to fit the work Stefan has done. If the satellite company that provided the photo to the Sun was precise in placing the boundary, the meteor wouldn't have passed over Korkino as several videos show it did. My revision of his KMZ file is here.

Here's a static image taken from the KMZ file.

March 26, 2012

# Math demos

I've uploaded a few Mathematica Demos that illustrate some Middle School topics.
Sept 8, 2011

# Sprint Key

The Wednesday sprint key is here.
Apr 06, 2011

# Registration Homework

To register in the Khan Academy, follow these instructions.

This homework is for all students regardless of how well you did on the triangle problem. It is due on Friday, Apr 8.

Apr 04, 2011

# Correction Homework

The usual 10 x rewrite rule applies to all questions except for the triangles.

If you missed either of the two triangles, follow these instructions.

The 10 x rewrites are due by Wednesday, the triangle assignment is due Friday.

Apr 02, 2011

# Mathcounts Answer submission and display pages

To enter your Mathcounts Answers, click here.

To see which answers were right and wrong, click here.

Correct answers are marked with a check mark, and incorrect answers are marked with an 'X.',

Here are the 3 currently available workbooks: