Page 174 - NUMINO TG_3A

10Multiply 2-Digit numbers by 1-Digit numbers Unit

054-B4-1 054-B4-2

Understand Multiplication (2) ^3 2. Multiply.
1. Multiply and write the missing numbers. 50
Example
Example 3
83 83 83
53^3= ^2 ^2 ^2

53 6 166
^ 53
^ Multiply the ones. Multiply the tens.
+ 53 2^3 ones=6 ones
Regroup if necessary.
2^8 tens=16 tens
16 tens=1 hundred 6 tens

a. ^4 b. ^6 a. 4 1 b. 6 2 c. 2 1 d. 7 3
32^4= 30 61^6= 60 ^5 7 ^5 2 ^5 9 ^5 2

2 1

e. 5 2 f. 3 1 g. 4 2 h. 9 4
^5 4 ^5 8 ^5 4 ^5 2

c. ^3 d. ^2 i. 7 1 j. 5 3 k. 8 1 l. 3 2
42^3= 40 83^2= 80 ^5 5 ^5 3 ^5 4 ^5 4

2 3

Objective Multiply numbers that need Objective Multiply numbers that need
regrouping in the tens place. regrouping in the tens place.

Textbook Reference Unit 10, activity 2 Textbook Reference Unit 10, activity 2

054-B5-1 054-B5-2

Multiplication with Regrouping ^3 2. Multiply.
1. Multiply and write the missing numbers. 20

Example 5 Example

25^3= 26 1 6 1 6
^3 3 3
2 2
^ ^

25 8 78
^ 25
^ Multiply the ones. Multiply the tens.
+2 5 3^2 tens=6 tens
Regroup if necessary. Add the tens.
3^6 ones=18 ones 6 tens+1 ten=7 tens
18 ones=1 ten 8 ones

a. ^3 b. ^2 a. b. c. d.
28^3= 20 39^2= 30 18 45 37 24

8 9 ^5 2 ^5 2 ^5 2 ^5 4

c. d. e. f. g. h.
17^4= 46^2= 14 27 17 18

^5 7 ^5 3 ^5 5 ^5 3

^4 ^2 i. j. k. l.
10 40 16 29 23 15

7 6 ^5 5 ^5 2 ^5 4 ^5 5

Objective Multiply numbers that need Objective Multiply numbers that need
regrouping in the tens place. regrouping in the tens place.

Textbook Reference Unit 10, activity 3 Textbook Reference Unit 10, activity 3

3A Unit 10 156