MATH 212 Midterm: MATH212_ALL-SECTIONS_FALL2010_0000_MID_EXAM_1

• School: University of Maryland
• Department: Mathematics
• Course: MATH 212
• Professor: All

Document Summary

Name_______________________________________: consider the multiplication 39 x 14, calculate using the standard algorithm (below left) and using the partial products algorithm (below right): Partial products algorithm: sketch an area model of this multiplication on the grid below. Show how the area model can be subdivided to show the partial products. Label each portion of the area with the corresponding partial product (__ x __ = ___ : a. Use the lattice method and the grid below to multiply 31 x 55. Expand the equations so that it is clear which property of multiplication is being used. Draw a diagram to illustrate why the property is sensible. Explain: show how to use the standard algorithm to calculate 6. 2 x 0. 144, give the rule for placing the decimal point according to the standard algorithm. Also give the answer to the multiplication: consider the product (cid:2870)(cid:2871) (cid:3400)3(cid:2869)(cid:2872, calculate the product using the standard algorithm.