Adding multiples of ten and a hundred

Add whole hundreds to 3-digit numbers mentally.

More adding multiples of 10 to 2-digit and 3-digit numbers. The units remain the same in these questions.

Quick revision of adding multiples of 10. A nice easy break from the hard stuff!

Number bonds to 1,000 with the help of bar model.

Knowing pairs of numbers that make 10 will make these pages easy: pairs of multiples of 100 that total 1000.

Adding whole hundreds with visual help.

Help with adding whole tens and whole hundreds ?in your head?.

More practice at adding two multiples of 100.