Math Games

Grade 1 - Number

Standard 1.N.8 - Write a subtraction sentence to represent the word problem with numbers up to 18.

Included Skills:

Demonstrate an understanding of addition of numbers with answers to 20 and their corresponding subtraction facts, concretely, pictorially and symbolically, by:
• using familiar and mathematical language to describe additive and subtractive actions from their personal experience
• creating and solving problems in context that involve addition and subtraction
• modelling addition and subtraction, using a variety of concrete and visual representations, and recording the process symbolically.

• Achievement Indicators:
- 1N8.1 Act out a given problem presented orally or through shared reading.
- 1N8.2 Represent the numbers and actions presented in a given story problem by using manipulatives, and record them using sketches and/or number sentences.
- 1N8.3 Create an addition problem based on personal experiences, and simulate the action with counters.
- 1N8.4 Create a word problem for a given addition or subtraction number sentence (equation).
- 1N8.5 Create a subtraction problem based on personal experiences, and simulate the action with counters.
- 1N8.6 Write the related subtraction fact for a given addition fact.
- 1N8.7 Write the related addition fact for a given subtraction fact.
- 1N8.8 Indicate if the scenario in a given story problem represents additive or subtractive action.
- 1N8.9 Represent a given story problem pictorially or symbolically to show the additive or subtractive action, and solve the problem.