Page 12 - TG_G1_CH6_CHRIS

Problem-Solving questions 1 and 2 include:
1 We had 19 students in our music class.
10 more students joined the class. How • Finding 1 more and 10 more than a given two-digit number mentally
many students are in our class now? • Solving word problem and situations concerning 1 more and 10 more
29 students
After children solve the independent practice, make sure they understood how
to find 10 more than 2-digit numbers in real life situations by solving problem 1.
Encourage them to read the situation carefully and use the 100 chart to find 10
2 I am thinking of a 2-digit more than 19. The answer is 29 students.
number. The sum of the digits is 9. I am thinking of a 2-digit number.
One digit is one more than the other. The sum of the two number is 9. Then have children explore a situation that includes making an inference and
justifying the answer in their own words in problem 2.
What number am I thinking of? The difference between them is 5
Now, make your own clue. 54 or 45 Encourage children to read and understand the problem carefully and think
about how to find the 2-digit number. A possible answer is 45. Encourage them
What is the number? 27 or 72
to find their own clue.
Vocabulary Check Complete.
Write 1 more or 10 more. When encouraging children to use the hundreds chart, ask, What happens to
the ones and tens digits when you add 1 more or when you add 10 more?
10 more than 87 is 97. e.g. If the number is 35 and you add one more, the tens digit stays the same
(3) and the ones digit goes up by 1 (6). If you add 10 more to 35, the tens digit
1 more than 87 is 88. goes up by one (4) and the ones digit stays the same (5).
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After solving exercises 1 and 2, copy the additional problems below onto the
board for group or individual work. The additional problems are based on
finding one more and ten more than a 2-digit number. Ask how can you find
Vocabulary Check one more? and How can you find ten more than a number? Encourage them
to use the 100 chart to find the numbers in each case.
If children struggle to complete the activity,
use a hundred chart to help answer the If children have difficulty, give them a hundred chart and guide them to use it
questions. to find ten more and one more than the given numbers in each problems.

Additional problem 1
Last year, Robert visited the zoo. He saw 56 animals. This year Robert visited
EXIT ACTIVITY the same zoo. He saw 10 more animals than he saw last year. How many
animals did this year?
We can use the hundred chart to find 10 more than 56. We can find it by
Use the Exit Activity for this lesson to moving one step down from 56, which is 66. He saw 66 animals in all.
reinforce children’s understanding. This
can be used as an informal formative Additional problem 2
assessment. Adeline has 11 books. On her birthday, her mother bought her one book and
some friends gave her 10 more books. How many books does she have in all?
We can use the hundred chart to find one more and ten more than a
number. We start with 11, then move one step right to find one more than 11,
which is 12, and then we move one step down to find 10 more than 12. Which
is 22. She has 22 books.

CLOSURE

At the end of the lesson make sure children understand the main concept of the lesson by asking them to complete the
following: 10 more than 36 is ___
Children should use the hundred chart to find the number that is ten more than 36.
We move down one step to find ten more than the given number.
We start with 36 and move one step down. 10 more than 36 is 46.

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