Using the base-ten blocks, a THOUSAND blocks make a cube. One HUNDRED is a "flat", a TEN is a "stick", and one little block is a UNIT or ONE. We see several numbers with four digits made with these blocks, and write them as numerals. The first part of this lesson is here: See more videos for 3rd grade math: Math Mammoth Grade 3 Curriculum: Workbook about 4-digit place value:
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Watch how I solve several addition and subtraction word problems involving four-digit numbers and estimation.
Watch how I solve several addition and subtraction word problems involving four-digit numbers and estimation.
See examples of how to regroup (borrow) in subtraction with four-digit numbers. We also go through a word problem. Math Mammoth Grade 3 Curriculum Practice subtraction in columns online:
See examples of how to regroup (borrow) in subtraction with four-digit numbers. We also go through a word problem. Math Mammoth Grade 3 Curriculum Practice subtraction in columns online:
Just a short video showing that we add four-digit numbers in columns the same way as three-digit numbers. Regrouping works the same way! Math Mammoth Grade 3 curriculum Practice vertical (column) addition online:
Just a short video showing that we add four-digit numbers in columns the same way as three-digit numbers. Regrouping works the same way! Math Mammoth Grade 3 curriculum Practice vertical (column) addition online:
To compare four-digit numbers, we first compare the thousands. If those digits are the same, we compare the hundreds digits. If those are the same, we look at the tens digits. And lastly the ones. Follow along and solve the problems with me! Math Mammoth Grade 3 curriculum Online practice for ordering numbers:
To compare four-digit numbers, we first compare the thousands. If those digits are the same, we compare the hundreds digits. If those are the same, we look at the tens digits. And lastly the ones. Follow along and solve the problems with me! Math Mammoth Grade 3 curriculum Online practice for ordering numbers:
Mathy my mascot makes a pictograph of sales data, and for that, the numbers need to be rounded to the nearest hundred first. This video goes with a lesson in the Math Mammoth curriculum for 3rd grade. Learn more: We also offer free online practice of rounding numbers (to any place):
Mathy my mascot makes a pictograph of sales data, and for that, the numbers need to be rounded to the nearest hundred first. This video goes with a lesson in the Math Mammoth curriculum for 3rd grade. Learn more: We also offer free online practice of rounding numbers (to any place):