Number Sense
What is the number before and after 105?
Before- 104 After-106
What place is the digit 8 in with the number 68?
Ones
What is addition? What is the formula for addition? What are the names of the parts?
Adding something to something else using addend plus addend equals sum.
What is subtraction?
Taking an amount away from another.
Solve
76-20
56
Odd or even?
75
110
98
75- odd
110-even
98- even
What is the value of 4 in the number 450?
400
When adding double digit numbers together, which place do you always start in?
Ones
When you subtract, you try to find the what?
Difference
299+135
434
Skip count by 2's up until 26
2,4,6,8,10,12,14,16,18,20,22,24,26
345 is _____ than 354?
The number in the tens place is higher in 354 than 345. They both begin with 3 hundred, but the tens place is higher in 354.
True or false
When you add two numbers together, you find the difference? Why or why not?
False.
You find the sum in addition. You find the difference in subtraction.
True or false
When you subtract numbers, you will have an answer that is less than what you started with?
True
Solve
856+425
1,281
What does this statement read?
24<56
24 is less than 56.
If I had 1 flat, 3 rods, and 5 cubes what value do I have?
135
Solve!
56+42
98
65 birds are sitting on a telephone line. 13 birds fly away. How many birds are on the telephone line now?
52
Solve!
740-356
384
When looking at a 100's chart, if you start at the number 45, what number would be directly below it? Why?
55. It goes by 10's. Ten more through the floor. Ten less is above the number.
If I had 1 block, 7 flats, 9 rods and 2 cubes what is my value?
1,792
Solve!
456+325
781
Solve!
257-132
125
Solve!
821-304
517