Digits, recording the So 5<6 compare 20 to 30? comparisons with 6<7 20<30 or 30>20 are the symbols, <,>,= 9>8 both correct answers. Number and Add within 100, Although this standard Ask your child to add Operations in including adding a focuses on addition, two digit numbers and Base Ten number showing students that one numbers. Grade 1 and a one digit addition and Help them to see the Standard 4 number, and adding subtraction are closely place value of the (1.NBT.4) a two number related will help them numbers ones or – and a multiple of 10, "see" the reasoning in tens, that they add using concrete what they are doing. together the ones and models or drawings Once students have tens get added to tens. and strategies based demonstrated a firm Sometimes it is on place value, understanding of the necessary to convert properties of place value of two-digit ones to a ten and ones operations, and/or numbers, they are when adding numbers. the relationship ready to add a between addition digit number and a and subtraction; one-digit number, and relate the strategy two two-digit numbers to a written method (one of which is a and explain the multiple of ten (which reasoning used. avoids the process or Understand that in regrouping) . Further, adding two digit students understand numbers, one adds that in addition digits tens and tens, ones in the ones place are and ones; and added; digits in the sometimes it is tens place are added; necessary to and sometimes compose a ten. composing a ten is necessary. Further, students understand that in addition and subtraction, digits in the ones place are added and subtracted; and, digits in the tens place are added and
Digits, recording the comparisons with the symbols, <,>,= So 5<6 6<7 9>8 compare 20 to 30? 20<30 or 30>20 are both correct answers. Number and Operations in Base Ten Grade 1 Standard 4 (1.NBT.4) Add within 100, including adding a number and a one digit number, and adding a two number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten. Although this standard focuses on addition, showing students that addition and subtraction are closely related will help them "see" the reasoning in what they are doing. Once students have demonstrated a firm understanding of the place value of two-digit numbers, they are ready to add a number and a one-digit number, and two two-digit numbers (one of which is a multiple of ten (which avoids the process or regrouping) . Further, students understand that in addition digits in the ones place are added; digits in the tens place are added; and sometimes composing a ten is necessary. Further, students understand that in addition and subtraction, digits in the ones place are added and subtracted; and, digits in the tens place are added and Ask your child to add two digit numbers and one digit numbers. Help them to see the place value of the numbers – ones or tens, that they add together the ones and tens get added to tens. Sometimes it is necessary to convert ones to a ten and ones when adding numbers.
1st-Grade-Math-WORD.docx