Module 2, Topic B, Lessons 3 - 9: The standard algorithm for multi-digit and whole number multiplication.
Show your work for every problem on the paper copy of your test. Use grid paper if you need it.
5.OA.1, 5.OA.2, 5.NBT.5
Question 1
1.
Question 2
2.
Question 3
3.
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
Larry claims that (14 + 12) x (8 + 12) and (14 x 12) + (8 x 12) are equivalent because they have the same digits and the same operations.
Is Larry correct? Why or why not?
Question 8
8.
Draw an area model and then solve using the standard algorithm.
24 x 21 =
(Correct area model: 1 point, Correct standard algorithm: 1 point)
Question 9
9.
Question 10
10.
Solve using the method you prefer. Use estimation to check the reasonableness of your answer.
456 x 42 =
(1 point for correct answer, 1 point for correct estimation)
2,736
1,736
19,152
18,152
343 x 21 =
7,203
1,029
6,103
929
371 x 302 =
1,855
112,042
111,042
11,872
481 x 352 =
4,810
169,212
169,312
168,312
Which expression matches the statement "2 times the difference between 49.5 and 37.5"?
2 x (49.5 + 37.5)
2 x (49.5 - 37.5)
2 x 49.5 - 37.5
2 x 49.5 + 37.5
Adrienne solved 293 x 47 in the following way:
293
x 47
2051
+1172
3223
What was her mistake?
She didn't add the partial products correctly.
She didn't use a placeholder (0) for the ones place when she multiplied by 4 tens.
She didn't regroup properly.
She didn't multiply to find the first partial product
Jeffery bought 203 sheets of stickers, each sheet has 12 stickers. He gave away 907 stickers to his family and friends on Valentine's Day. How many stickers does he have left? Show all of your work on your paper test.
Jeffery has 1,529 stickers left.
Jeffery has 692 stickers left.
Jeffery has 609 stickers left.
Jeffery has 3,343 stickers left.
Each of the 25 students in Mr. McDonald's class sold 16 raffle tickets. If each ticket costs $15, how much money did Mr. McDonald's students raise?