Welcome Back!! I hope that everyone had a restful holiday. We will begin the 3 rd nine week with the following math standards.

MCC1.OA.3 Apply properties of operations as strategies to add and subtract. Examples: If 8+3=11 is known, then 3+8=11 is also known. (Commutative property of addition.) To add 2+6+4, the second two numbers can be added to make a ten, so 2+6+4=2+10=12. (Associative property of addition.) MCC1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: 10 can be thought of as a bundle of ten ones-called a “ten.” The numbers from are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones). MCC1.NBT.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

*We will start the week by talking about how we can flip addition sentences to create the same number. It is called commutative property of addition. 3+1=4 so 1+3=4 *We will soon be reviewing how we can group items in groups of tens. Then move forward using tens rods and ones cubes (and other manipulatives) to represent numbers. *They will also start off working hard on their facts. They will soon be adding and subtracting double digit numbers and will for the next few weeks be refining their facts skills to prepare for that. *This nine weeks 10 more 10 less will be tested. So we will be practicing that daily.

1.Nick had 16 apples. He put all of his apples in a basket and found that 4 were bad. How many good apples does Nick have? 1.How many more people voted for pizza than hotdogs? (see classroom tally graph) = If 4+3=7 so I can say …….a. 5-4=1 b. 3+4=7 4.1 more than less than less than more than ___=5 9. ___+1=3

1.Johnny and Barry had 15 yellow balls. Kelly and Barbie had 12 green balls. How many more balls does Johnny and Barry have? 2.How many people voted for pizza or hamburgers? (see classroom tally graph) = If 5+4=9 so I can say …….a. 10+1=11 b. 4+5=9 5.1 more than less than less than more than ___=8 10. ___+2=4

1.Joan has 3 bracelets and her sister has 6 bracelets. Her friend Betty has 9 bracelets. How many bracelets do the girls have in all? 2.How many less people voted for hotdogs than hamburgers? (see classroom tally graph) 3.6+1= If 4+2=6 so I can say …….a. 2+4=6 b. 4+5=6 5.1 more than less than less than more than ___=6 10. ___+6=7