Page 92 - NUMINO Challenge_D1

Problem solving

1 The number 628 is shown on the abacus. Find Key Points
the answer for the following subtraction problem.
Find out what each
bead on the bottom
and each bead on
top represents.

6 28
-

2 The following grids each represent a number. Find out what
number each square
12 3 represents.

4 20 28

Color the squares to make the addition sentence
true.

+=

89Number Theory