Five pages about reading a multiplication as a comparison: 3 × 24 is 3 times as many as 24. On page 1 one child has a group of pictures and a second child has the same group again and again: students count the groups, write how many times as many, and write the multiplication, such as 4 × 3 = 12. The first one is done as an example. Page 2 has six strip diagrams drawn to scale: each bar of the bigger amount is exactly as long as the bar it is compared with, and a brace with a question mark marks the amount to find. Students write the number in each empty bar, then multiply. Page 3 says it in words: draw lines to match multiplications to their words, write the multiplication for words like 5 times as many as 18, and finish sentences such as 7 × 13 is 7 times as many as 13. Page 4 has six comparison story problems with room to draw a strip diagram; the answer key draws one for each. Page 5 puts more than and times as many side by side with the same numbers: circle + or ×, write the number sentence, and solve.
Before page 1, give one student 3 counters and ask another to take 4 times as many: four groups of 3. Line the groups up under the first student's group so the class can see each group is the same size. Before page 2, cut paper strips of the same length and lay three of them under one to show 3 times as long. Page 5 makes a good partner talk: read each pair of stories aloud and ask what word tells you to add or to multiply.
Use snacks or toys: put out 5 crackers, then make a pile that is 3 times as many and count it together. Ask comparison questions in daily life, such as a pencil 7 inches long and a ribbon 4 times as long. Then ask how the answer would change if the ribbon were only 4 inches longer.
This pack supports the following Common Core State Standards for Mathematics:
© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.
A 5-page multiplication comparison pack for 3rd grade. Count groups of pictures to see that 4 × 3 is 4 times as many as 3, then fill in strip diagrams where every bar is exactly as long as the bar it is compared with. Match multiplications like 3 × 24 to their words, write the multiplication for 5 times as many as 18, and finish sentences such as 7 × 13 is 7 times as many as 13. Solve six comparison story problems by drawing a strip diagram, and tell more than from times as many: add for one, multiply for the other. Every page comes in color and in black and white. Answer keys included.
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