Page 26 - Grade 1 CG
P. 26
MATHEMATICS Cont.
Main strands of the program offered are:
Numbers and the number system
• Count, read and write numbers to at least 100 and back again.
• Count on in ones and tens, in twos and fives.
• Recognize and use ordinal numbers up to at least the 10th number and
beyond.
• Order numbers to 100; compare two numbers using the > and < signs.
• Understand even and odd numbers and recognize these up to at least 20.
• Sort numbers, e.g. odd/even.
• Recognize which shapes are divided in halves or quarters.
CALCULATION
Mental strategies
• Find and learn by heart all numbers pairs to 10 and pairs with a total of 20.
• Find all pairs of multiples of 10 with a total of 100.
• Learn and recognize multiples of 2, 5 and 10
• Find and learn doubles for all numbers up to 10 and also 15, 20, 25 and 50.
Addition and subtraction
Teach addition and subtraction concepts of 2-digit numbers and fact to 100 and
enable problem solving strategies. We teach addition by counting on and
subtraction by counting back on a number line.
Recognize the use of a symbol such as Δ to represent an unknown and use =
sign.
• Understand that addition can be done in any order, but subtraction cannot.
• Understand subtraction as both difference and take away.
Multiplication and Division
• Understand multiplication as repeated addition and use the × sign.
• Introduce division.
Main strands of the program offered are:
Numbers and the number system
• Count, read and write numbers to at least 100 and back again.
• Count on in ones and tens, in twos and fives.
• Recognize and use ordinal numbers up to at least the 10th number and
beyond.
• Order numbers to 100; compare two numbers using the > and < signs.
• Understand even and odd numbers and recognize these up to at least 20.
• Sort numbers, e.g. odd/even.
• Recognize which shapes are divided in halves or quarters.
CALCULATION
Mental strategies
• Find and learn by heart all numbers pairs to 10 and pairs with a total of 20.
• Find all pairs of multiples of 10 with a total of 100.
• Learn and recognize multiples of 2, 5 and 10
• Find and learn doubles for all numbers up to 10 and also 15, 20, 25 and 50.
Addition and subtraction
Teach addition and subtraction concepts of 2-digit numbers and fact to 100 and
enable problem solving strategies. We teach addition by counting on and
subtraction by counting back on a number line.
Recognize the use of a symbol such as Δ to represent an unknown and use =
sign.
• Understand that addition can be done in any order, but subtraction cannot.
• Understand subtraction as both difference and take away.
Multiplication and Division
• Understand multiplication as repeated addition and use the × sign.
• Introduce division.
