Add and subtract numbers using concrete objects, pictorial representations, and mentally, including: a two-digit number and 1s; a two-digit number and 10s; 2 two-digit numbers; adding 3 one-digit numbers

Gordons addition bingo

Gordons subtraction bingo

Gordons subtract dartboard

Gordons horizontal subtraction using place value cards

Gordons inverse machine

Gordons loop cards

Gordons matching pairs - calculation

Gordons number facts grid

Gordons number line addition

Gordons how much left

Gordons horizontal addition using place value cards

Gordons addition and subtraction using tens and ones

Gordons numberline subtraction - counting back

Gordons numberline subtraction - counting forward

Gordons addition dartboard

NNS Counting On And Back ITP

NNS Difference ITP

NNS Number Line ITP

Big Maths digit flip challenge

Big Maths digit flip challenge pupil sheet

Big Maths magic squares

Adding telephone numbers

My telephone number is 83759392.
8+3+7+5+9+3+9+2=
83+75+93+92=
83+7+59+39+2=
8+37+5+93+92=
83+75+9+3+9+2=

Write down an eight-digit telephone number.
Separate the digits into one-digit or two-digit numbers and find the total.
Investigate separating the digits into other one-digit or two-digit numbers.
Find the total each time.
What is the largest answer you can get by separating the digits into one-digit or two-digit numbers and finding the total?
What is the smallest answer you can get?

Grandmas scales