4th grade Add + Subtract
Add + Subtract syllabus for 4th grade
4th grade addition and subtraction has a series of topics that enable you to practice adding and subtracting double digit numbers ending in 9 or 1. In these topics you are expected to use rounding and adjusting to add or subtract such numbers. The "Number machine" sub-category uses 2 step operations and introduces the notion of order of operations which will become increasinlgy important in the next few years. "Inverse operations" are used to check addition answers using subtraction and subtraction answers using addition.
Add + Subtract sub-categories for 4th grade
Add + Subtract topics by sub-category
4th grade → Add + Subtract → Add 79, 89, 99
Add 79 to a multiple of 10
Add 79 to a number by adding 80 and then subtracting 1
Add 89 to a multiple of 10
Add 89 to a number by adding 90 and then subtracting 1
Add 99 to a multiple of 10
Add 99 to a number by adding 100 and then subtracting 1
4th grade → Add + Subtract → Add 71, 81, 91
Add 71 to a multiple of 10
Add 71 to a number by adding 70 and then adding 1 more
Add 81 to a multiple of 10
Add 81 to a number by adding 80 and then adding 1 more
Add 91 to a multiple of 10
Add 91 to a number by adding 90 and then adding 1 more
4th grade → Add + Subtract → Subtract 79, 89, 99
Subtract 79 from a multiple of 10
Subtract 79 from a number by subtracting 80 and then adding 1
Subtract 89 from a multiple of 10
Subtract 89 from a number by first subtracting 90 and then adding 1
Subtract 99 from a multiple of 10
Subtract 99 from a number by subtracting 100 and then adding 1
4th grade → Add + Subtract → Subtract 71, 81, 91
Subtracting 71
Subtract 71 by subtracting 70 and then subtracting 1 more
Subtracting 81
Subtract 81 by subtracting 80 and then subtracting 1 more
Subtracting 91
Subtract 91 by subtracting 90 and then subtracting 1 more
4th grade → Add + Subtract → Number machine
Add and subtract
Add and subtract to find the answer to these 2 step problems
Order of operations
Identify which pairs of operations produce the same answer
Missing addition
Find the missing addition in these 2 step add and subtract number machine operations
Missing subtraction
Find the missing subtraction value in these 2 step add and subtract operations
4th grade → Add + Subtract → Checking answers
Checking subtractions
Choose the inverse operations that check these subtractions
Checking additions
Choose the inverse operations that check these additions
Counting * Comparing numbers * Pattern * Place value * Addition * Subtraction * Add + Subtract * Multiplication * Division * Multiply + Divide * Fractions * Decimals * Percentages * Measurements * Shapes * Position + Direction * Statistics * Algebra *
