Page 193 - NUMINO TG_1A

Activity 1 Tens

jOb ective Read and write the tens after learning the place value of ten.

1. Textbook Instructions Activity 1 Tens

Have students understand what ones and Count the tens. ones
tens are. Explain that if there are ten ones, tens
there is one ten. =
You can count the
1. Have students fill in the blanks with the 10 ones 1 ten by ones.
correct numbers to show the numbers of
model blocks and the numbers in word form. 1 Learn about tens. You can also count
And, by putting the base-ten blocks into the by tens.
groups of tens, have students understand
how 2-digit numbers are formed. 2 tens 3 tens

Students might write 20 20 tens. In this 20 30
case, have them check how many groups of twenty
ten are made from twenty. thirty
Have students understand that we can
express two groups of ten in twenty as two 4 tens 5 tens
tens.
40 50
fifty
forty

6 tens 7 tens

60 70
sixty
seventy

8 tens 9 tens
80
90
eighty
ninety
108

2. Build Understanding

Ten Ones One Ten 20 ones 2 tens
Have students look at the picture on the right to understand that
10 ones 1 ten, so 20 ones 2 tens.
Tell them that the other numbers in question 1 can be expressed in
the same way as shown below.
30 ones = 3 tens, 40 ones = 4 tens, 50 ones = 5 tens, 60 ones = 6 tens
70 ones = 7 tens, 80 ones = 8 tens, 90 ones = 9 tens.

176 NUMINO Teacher s Guide