Multiple Ways to Add and Subtract
These exercises and activities are for students to use independently of the teacher to practise number properties.
Number framework domain and stage:
Addition and subtraction. Advanced additive to advanced multiplicative
Number levels 3 to 4
Numeracy Project book reference:
These exercises and activities follow from a teaching episode based on Book 5 Page 54 and are for those students who are able to use the associated number properties.
Prior knowledge. Students should be able to…
- Instantly recall multiplication facts to tens
- Instantly recall factors of numbers generated by multiplication facts to ten
- Familiarisation with the use of brackets in notation
- Multiply two digit numbers by a single digit number using the distributive law
eg 15 x 6 = (10 x 6) + (5 x 6) = 90
During these activities students will meet:
The exercises have been set up in the following way.
Exercise 1: requires the students to use the distributive law and write it out
Exercise 2: is a true/false activity
Only include examples like Exercise 1.
Ideas that can be developed from this activity:
ac + bc = (a + b)c
Practice exercises with answers:
Homework with answers:
Blank loopy master: Word (45KB)