Addition
21 + 14
What is 35?
Symbol used when showing addition.
What is a plus sign ( + ) ?
3 longs 1 cube + 7 cubes
What is 37?
20 - 8
What is 12?
A chart that shows the numbers 1 - 100.
What is a hundreds chart?
37 + 31
Symbol used when showing subtraction.
What is a minus sign ( - )?
5 longs 8 cubes - 4 longs 8 cubes
What is 10?
33 - 12
What is 21?
A line labeled with numbers.
What is a number line?
32 + 49
What is 81?
Answer to addition problem.
What is a sum?
6 longs 4 cubes + 2 longs 6 cubes
What is 90?
68 - 17
What is 51?
Small cubes that represent one object.
What is a ones cube?
75 + 25
What is 100?
Answer to a subtraction problem.
What is a difference?
3 longs 2 cubes + 6 longs 8 cubes
What is 100?
82 - 46
What is 36?
An object that shows 10 ones.
What is a long?
87 + 24
What is 111?
Opposite of addition.
What is subtraction?
8 longs 5 cubes - 4 longs 7 cubes
What is 38?
91 - 44
What is 47?
What are counters?