Page 36 - TG_G1_CH6_CHRIS

1 Khalid has 30 crayons. His friend Jeff Problem-Solving questions 1 and 2 include:
has 4 crayons more than Khalid.
How many crayons does Jeff have? • Adding tens and ones using the place value chart
• Solving word problem concerning Addition of tens and ones using the
34 crayons place value chart

2 Lily solved this homework problem.
She answered 40 + 6 = 64. After children solve the independent practice, make sure they understand how
Is her answer correct? Explain. to add tens and ones in a real-life situation by solving problem 1. Encourage
No. The correct answer is 46 them to read the situation carefully and guide them to use the place value
chart to find the sum of crayons Jeff has. The answer is 34 crayons.

Then have children explore a situation that includes making an inference and
justifying the answer in their own words in problem 2. Encourage children to
read the situation carefully and then check Lily’s answer. Guide them to use
Vocabulary Check Complete. Write tens or ones. the place value chart to solve the problem. The answer will be 46.

9 ones and 5 tens = 59 After finishing solving exercises 1 and 2, copy the additional problems below
onto the board for group or individual work. The additional problems are based
on adding tens and ones. Ask: how can you use the place value chart to
add numbers? Encourage them to use the place value concept to solve the
288
problems.
If children have difficulty, give them a place value chart and guide them to
Vocabulary Check add tens and ones using it to solve the problems.

If children cannot complete the sentence, Additional problem 1
review ones and tens in the Practice Leonie has 70¢ and 7¢. How much money does she have in all?
exercises. We can use the place value chart to add ones to a two-digit number.The
answer will be 70 + 7 = 77¢.

Additional problem 2
Mira bought 6 bundles of 10 flowers and 3 single flowers.
EXIT ACTIVITY How many flowers does she have in all?
We can use the place value chart to add ones to a two-digit number. The
answer will be 60 + 3 = 63 flowers.
Use the Exit Activity for this lesson to
reinforce children’s understanding. This
can be used as an informal formative
assessment.

CLOSURE

At the end of the lesson make sure children understand the main concept of the lesson. Ask:
What is the sum of 5 tens and 5 ones?
Tens Ones
Children can use the place value chart to add ones to a two-digit number.
The place value chart below shows the answer. 5 0
+ 5
5 5

427
427