Page 182 - NUMINO TG_3A
P. 182
11The Magic Rods Unit
2 . Fill in the blanks. 2 2 2. Have students remember the regrouped
ones while calculating the vertical sentences.
54 54 54 Have them write the regrouped ones in small
^6 writing on the top of the tens.
^6 ^6
4 324 3. Have students write the answer and the
process when solving the word problems.
a. 1 3 b. 2 7 c. 2 5
2 6 4 3 5 4
^ 8 ^ 1 ^ 0
13 14 22
3 . Solve each problem.
a. 1 b. 3 c. 1 d. 3
45 38 42 55
^3 ^4 ^5 ^6
135 152 210 330
e. There are 18 cherries on each plate.
If there are 3 plates, how many cherries are there in all?
18 3 2 54 cherries
18
3
54
f. There are 39 lions at the zoo.
How many lions’ legs are there in all?
39 4 3 156 legs
11. The Magic Rods 103
39
4
156
When multiplying a 2-digit number by a 1-digit number with two regroupings, students may make a mistake
as shown in example 1. This is because students do not understand about the place values. Explain to them
how to overcome this problem as shown in Example 2.
Example 1: Example 2: You can write 34 as 30 4.
34 30 4 43
3 3 30 3
12 4 3 12
99 3 3 90
21 102
3A Unit 11 165
2 . Fill in the blanks. 2 2 2. Have students remember the regrouped
ones while calculating the vertical sentences.
54 54 54 Have them write the regrouped ones in small
^6 writing on the top of the tens.
^6 ^6
4 324 3. Have students write the answer and the
process when solving the word problems.
a. 1 3 b. 2 7 c. 2 5
2 6 4 3 5 4
^ 8 ^ 1 ^ 0
13 14 22
3 . Solve each problem.
a. 1 b. 3 c. 1 d. 3
45 38 42 55
^3 ^4 ^5 ^6
135 152 210 330
e. There are 18 cherries on each plate.
If there are 3 plates, how many cherries are there in all?
18 3 2 54 cherries
18
3
54
f. There are 39 lions at the zoo.
How many lions’ legs are there in all?
39 4 3 156 legs
11. The Magic Rods 103
39
4
156
When multiplying a 2-digit number by a 1-digit number with two regroupings, students may make a mistake
as shown in example 1. This is because students do not understand about the place values. Explain to them
how to overcome this problem as shown in Example 2.
Example 1: Example 2: You can write 34 as 30 4.
34 30 4 43
3 3 30 3
12 4 3 12
99 3 3 90
21 102
3A Unit 11 165
