Page 107 - NUMINO Challenge_A1
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FACTOJunior Answer Key
Mathematician
Number and Operations
1. Making Numbers with Number Cards
Investigate Making 3-digit Numbers
100s 10s 1s 3-digit number 100s 10s 1s 3-digit number 321 320 312 310 302
12 3 123 13
21 23 2 132 Place the three numbers in the hundreds, tens, and ones
31 3 213 32 1 231 place in order from greatest to smallest.
2 312 1 321
102 103 120 123 130
Making the Greatest and Smallest Numbers
First, put the three smallest numbers in the hundreds,
When the number in the When the number in the When the number in the tens, and ones place in order from smallest to greatest. If
there is a 0, put the smallest number besides 0 in the
100s place is 1: 100s place is 2: 100s place is 3: hundreds place. Then, put 0 in the tens place and the
third smallest number in the ones place, and make the
100s 10s 1s 3-digit 100s 10s 1s 3-digit 100s 10s 1s 3-digit five smallest numbers.
10 number number number
2 102 2 0 1 201 3 0 1 301
1 0 3 103 2 0 3 203 3 0 2 302
1 2 0 120 2 1 0 210 3 1 0 310
1 2 3 123 2 1 3 213 3 1 2 312
1 3 0 130 2 3 0 230 3 2 0 320
1 3 2 132 2 3 1 231 3 2 1 321
Type Study The Value of Numbers Made with Number Cards
1 Place 7 in the hundreds place, 3 in the tens place, and 1 in the ones place to make the
greatest number. Write the three greatest numbers you can make, in order from greatest
to smallest, to find the fourth greatest number.
731 730 713 710
2 Since 0 cannot be put in the hundreds place, put 1 in the hundreds place, 0 in the tens
place, and 3 in the ones place. Write the three smallest numbers, in order from smallest
to greatest, to find the fourth smallest number.
103 107 130 137
3 The fourth greatest number: 710
The fourth smallest number: 137
The sum of the fourth greatest and smallest numbers is: 710 137 847
2 NUMINO Challenge A1
Mathematician
Number and Operations
1. Making Numbers with Number Cards
Investigate Making 3-digit Numbers
100s 10s 1s 3-digit number 100s 10s 1s 3-digit number 321 320 312 310 302
12 3 123 13
21 23 2 132 Place the three numbers in the hundreds, tens, and ones
31 3 213 32 1 231 place in order from greatest to smallest.
2 312 1 321
102 103 120 123 130
Making the Greatest and Smallest Numbers
First, put the three smallest numbers in the hundreds,
When the number in the When the number in the When the number in the tens, and ones place in order from smallest to greatest. If
there is a 0, put the smallest number besides 0 in the
100s place is 1: 100s place is 2: 100s place is 3: hundreds place. Then, put 0 in the tens place and the
third smallest number in the ones place, and make the
100s 10s 1s 3-digit 100s 10s 1s 3-digit 100s 10s 1s 3-digit five smallest numbers.
10 number number number
2 102 2 0 1 201 3 0 1 301
1 0 3 103 2 0 3 203 3 0 2 302
1 2 0 120 2 1 0 210 3 1 0 310
1 2 3 123 2 1 3 213 3 1 2 312
1 3 0 130 2 3 0 230 3 2 0 320
1 3 2 132 2 3 1 231 3 2 1 321
Type Study The Value of Numbers Made with Number Cards
1 Place 7 in the hundreds place, 3 in the tens place, and 1 in the ones place to make the
greatest number. Write the three greatest numbers you can make, in order from greatest
to smallest, to find the fourth greatest number.
731 730 713 710
2 Since 0 cannot be put in the hundreds place, put 1 in the hundreds place, 0 in the tens
place, and 3 in the ones place. Write the three smallest numbers, in order from smallest
to greatest, to find the fourth smallest number.
103 107 130 137
3 The fourth greatest number: 710
The fourth smallest number: 137
The sum of the fourth greatest and smallest numbers is: 710 137 847
2 NUMINO Challenge A1
