Page 174 - NUMINO Challenge_M1
P. 174
Type Study 0 cannot be in the tens place.
2, 6, 9
Make two digit numbers by placing a digit in the tens place, and then the
remaining digits in the ones place.
0 20
2 6 26
9 29
0 60
6 2 62
9 69
0 90
9 2 92
6 96
The 2-digit numbers that can be made are 20, 26, 29, 60, 62, 69, 90, 92,
and 96. That is a total of 9 numbers.
Problem solving
1 0 cannot belong in the hundreds place so the hundreds place can be 7 , 3 .
Use a tree diagram to find the possible numbers.
0 7 307
3
7 0 370
0 3 703
7
3 0 730
The number of 3-digit number is 4.
2 In order to make a number greater than 40, the tens place must be 4 or 5 .
10
4 51 41, 45, 50, 51, and 54
54
37Answer Key
2, 6, 9
Make two digit numbers by placing a digit in the tens place, and then the
remaining digits in the ones place.
0 20
2 6 26
9 29
0 60
6 2 62
9 69
0 90
9 2 92
6 96
The 2-digit numbers that can be made are 20, 26, 29, 60, 62, 69, 90, 92,
and 96. That is a total of 9 numbers.
Problem solving
1 0 cannot belong in the hundreds place so the hundreds place can be 7 , 3 .
Use a tree diagram to find the possible numbers.
0 7 307
3
7 0 370
0 3 703
7
3 0 730
The number of 3-digit number is 4.
2 In order to make a number greater than 40, the tens place must be 4 or 5 .
10
4 51 41, 45, 50, 51, and 54
54
37Answer Key
