Question
Score: 0/1
Question
Choose the correct model to continue.
Choose the correct model above.
If you choose wrongly, you will hear a wrong sound and must choose again.
If you choose wrongly, you will hear a wrong sound and must choose again.
Step: Choose model
Press Check Model before solving equation.
+
−
×
÷
=
Drag operators into the circles in the equation.
Tools
Unlock sound once on iPad/iPhone.
Time: 40s
Difference: Choose Compare model
Type A: greater − difference = smaller
Type B: smaller + difference = greater
Sum: Choose Part-Whole model
Solve as: total − known = other
Working Space (Place Value)
Use finger / mouse / stylus
HUNDREDS
TENS
ONES