Page 94 - NUMINO Challenge_D1
P. 94
Problem solving 123 Key Points
42
1 Look at the calculation in the box on When do the
the right. Find the pattern and write 205 numbers carry over
the correct numbers in the blanks. to the next place
value?
32 031
2 3 44
10 1 43500
2 An alien sent the message shown below. How In the base 10
many fingers does this alien have? Assume that number system,
we humans use the base 10 number system numbers are carried
because we have 10 fingers. over to the next
place when the digit
111 - 33 = 34 of a place value
reaches 10. Also, if
1 is borrowed from
the tens place, the
digit 0 becomes 10.
91Number Theory
42
1 Look at the calculation in the box on When do the
the right. Find the pattern and write 205 numbers carry over
the correct numbers in the blanks. to the next place
value?
32 031
2 3 44
10 1 43500
2 An alien sent the message shown below. How In the base 10
many fingers does this alien have? Assume that number system,
we humans use the base 10 number system numbers are carried
because we have 10 fingers. over to the next
place when the digit
111 - 33 = 34 of a place value
reaches 10. Also, if
1 is borrowed from
the tens place, the
digit 0 becomes 10.
91Number Theory
