Objective: This activity tests students on multiplication of multi digit mixed numbers.
Standard: This puzzle is aligned with the following fourth grade common core standard:
CCSS.Math.Content.4.NBT.B.5— Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
There are two versions of the puzzle included so you can differentiate amongst different ability levels. One puzzle does not have any numbers listed around the outside of the puzzle, making constructing the grid easier. The second puzzle repeats some of the values on the outside, challenging the students to use their inductive reasoning skills to complete the puzzle and allowing for differentiation amongst ability groups.
Directions: Print out the gameboard on cardstock and have it laminated . Cut out the sixteen pieces and pass them out to individual students or to a group of students. The students must match up the multiplication problem with the product to complete the 4 x 4 grid.
What has been successful for us is to give points for correctly completing the puzzle, and extra credit points for the first few groups that finish. The Roman numerals are there so that you can quickly check for accuracy.
Note: Common Core Standards Public License “© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.”