Open ended
If you know 8 + 7 = 15, you also know that:
____ + _____ = ______
____ + _____ = ______
50 points per answer
What is 45-23? Use the jump strategy.
22
17 – ___ = 12
5
Complete the pattern: 1,000, 950, 900, 850, ____, ____
Audrey had 50 pencils. She gave away 19. How many pencils does she have now?
31
The difference between two numbers is 5. What might the two numbers be? Write 4 number sentences, e.g. 10 – 5:
50 points per answer.
Solve 354 - 218 using the split strategy
136
Solve for the missing number: 120 - ___ = 87.
33
If a pattern subtracts 25 each time, what are the next three numbers after 200, 175, 150?
125, 100, 75
A store had 230 apples in the morning. By the afternoon, 87 were sold. How many apples remain?
143
The difference between two numbers is less than 10. Write 3 pairs of numbers and their subtraction equations to show this.
100 points per example.
Examples: 15 - 7 = 8
12 - 5 = 7
30 - 25 = 5
What is 567 - 248? Use vertical subtraction.
319
Complete the equation: ___ - 125 = 175.
300
Fill in the blank: __ – 8 = 46
54
Khaleesi read 245 pages of a book that has 400 pages. How many pages does she have left to read?
155
Create 4 subtraction equations where the difference is an even number greater than 4 but less than 20.
100 points per equation.
Examples: 14 - 8 = 6
22 - 12 = 10
30 - 14 = 16
Molly saved $765 for a bicycle. She spent $428 on other things. How much money does she still have? Show your working out.
337
Solve: 512 - ___ = 267.
245
A pattern starts at 500 and decreases by 125 each time. What is the 5th number in the pattern?
0
Hudson baked 812 cookies but sold 437. How many cookies are left?
375
The difference between two numbers is 50. Write 5 different pairs of numbers and their subtraction equations to show this. Make sure at least one pair includes a number greater than 1,000.
100 points per equation.
Examples:
60 - 10 = 50
500 - 450 = 50
1,050 - 1,000 = 50
10,000 - 9,950 = 50
Explain how to solve 2823 - 1476 using any method and show all steps clearly.
1347
Fill in the blank: 1,000 – ___ = 735
265
Create your own subtraction pattern that starts at 450 and decreases by the same amount five times. What is the final number?
Check accuracy of answers.
The school ordered 1,234 textbooks. When they arrived, they realised 789 were damaged. How many undamaged textbooks are there?
445