Same surface, different depth
Four questions that look alike and need four different methods. One sheet per grade.
What these are for
A page of twenty subtractions trains subtracting. It cannot train working out which method a question wants, because the answer is the same every time. These sheets put that decision back: one shared surface, four questions, four different methods. The key names the method each one needed.
Format after Craig Barton's SSDD Problems.
Two rows of counters
The top row has 5 counters. The bottom row has 3 counters.
Put together · Compare · Compare · Take from
One number, four questions
The number is 47.
Read the tens digit · Read the ones digit · Add a ten · Count back one
Two numbers, four questions
The two numbers are 63 and 28.
Add with regrouping · Subtract with borrowing · Round · Estimate and justify
One array, four questions
A rectangle is made of squares: 4 rows with 6 squares in each row.
Multiply · Perimeter · Divide · Fraction of a quantity
One fraction, four questions
The fraction is 3/4.
Compare to a benchmark · Equivalence · Convert to hundredths · Fraction of a quantity
Two decimals, four questions
The two numbers are 2.4 and 0.6.
Add · Multiply · Divide · Compare distances