Mastering Addition of Big Numbers Without Regrouping

The video tutorial introduces Singapore Math, focusing on addition within 100 without regrouping. It covers methods like using number lines, number bonds, and base 10 models to simplify addition. Teachers are guided on how to enhance their content knowledge and teaching methods. The tutorial includes practical exercises to reinforce learning.

What is the primary focus of Singapore Math for teachers?

• Learning advanced calculus

• Understanding mathematical methods through textbooks

• Teaching without textbooks

• Memorizing mathematical formulas

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

How do you add 44 and 3 using a number line?

• Count back 3 from 44

• Divide 44 by 3

• Count forward 3 from 44

• Multiply 44 by 3

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

What are number bonds?

• Tools for division

• Relationships between a whole number and its parts

• A method to subtract numbers

• A type of mathematical game

In base 10 models, what does a rod represent?

• 1 unit

• 1000 units

• 10 units

• 100 units

Tags

CCSS.2.NBT.A.1B

How is the number 44 represented using base 10 models?

• Forty-four units

• Four units

• Four flats and four rods

• Four rods and four units

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What is the result of adding 41 and 15 using base 10 models?

• 51

• 61

• 45

• 56

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Using number bonds, how do you solve 34 plus 25?

• Divide 30 by 20

• Subtract 4 ones from 5 ones

• Multiply 3 tens by 2 tens

• Add 3 tens and 4 ones to 2 tens and 5 ones

Tags

CCSS.2.NBT.B.6

What is the sum of 51 and 20 using base 10 models?

• 61

• 71

• 81

• 91

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the sum of 18 and 21?

• 41

• 40

• 39

• 38

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the next step after learning addition without regrouping?

• Reviewing previous lessons

• Moving to the next lesson

• Taking a break

• Learning subtraction without regrouping

Tags

CCSS.2.NBT.B.7