Page 134 - NUMINO TG_4A

08How Many Pebbles? Unit

Material Number Cards

Round 1 Round 2

Product Sample Answers Product Sample Answers Round 2: Multiplying a 3-digit number by a
1-digit number
72 53 632 521
54 91 7 9 Place the largest digit in D and fill ABC to
make the largest number with the remaining
28 8 5 3 4,4 2 4 4,6 8 9 digits.
0 0
+3 6 0 +4 7 7 A BC
D
3,8 8 8 4,8 2 3
Example: Number cards , , ,
65 82 763 432
73 64 8 5 4,689

6,1 0 4 2,1 6 0 After playing to find the greatest product,
have the students play to find the smallest
product.

19 5 32 8
0 0
+4 5 5 +4 9 2

4,7 4 5 5,2 4 8

8. How Many Pebbles? 73

Example: Number cards 2, 3, 4, 5

2,236 2,226

When placing 2 and 3 in the ones places, the 3 must be multiplied with the larger number to get the greater
product. Place 3 in D to multiply with 5.

4A Unit 08 117