2.NBT.1.a
100 can be thought of as a bundle of ten tens --called a "hundred".
Khan Academy ResourcesIdentify the value of a digit (ones, tens, hundreds)Place value blocks within 1,000Regroup whole numbersHundreds, tens, and onesPlace value tables within 1,000Regrouping whole numbers: 675Use place value blocks to show numbers within 1,000Place value tables within 1,000Identifying value in digitsIntro to place value

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