Arrays And Multiplying 2 Digit Numbers By Multiples Of 10
Multiply a whole number of up to four digits by a one-digit whole number and multiply two two-digit numbers using strategies based on place value and the properties of operations. Multiplying 2-Digit Numbers by Multiples of 10 A bus service drives passengers between Milwaukee and Chicago every day.
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In this interactive math lesson children will practice multiplying 2-digit numbers by multiples of ten.
Arrays and multiplying 2 digit numbers by multiples of 10. The distance between the two cities is 89 mi. One way to find 60 26 is to use a grid. 20 is 2 groups of 10.
26 20 6. It takes about 40 gallons of water to do a load of wash. I make sure that the students know that when you multiply by multiples of 10 youadd only 1 zero because the multiple of 10 has 1 zero.
April3NBT3 Multiply one-digit whole numbers by multiples of 10 in the range 10-90 eg 9 80 5. 20 groups of 30 600 20 groups of 2 40 Find each product. Create an array by filling in the shape with base ten notation.
3NBT2 Fluently add and subtract within 1000 using strategies and algorithms based on place value properties of operations andor the relationship between addition and subtraction. How can you multiply by multiples. Show 60 rows with 26 squares in each row.
Doceri is free in the iTunes app store. Math Task Cards - Multiply by Multiples of 10 100 1000 Set 1 35 Task CardsThis includes numbers from 1-9 multiplying multiples of 10Get your students to practice multiplying by multiples of 10 100 1000 with these task cards. Draw a vertical line on the grid to separate the grid into two sections.
The array at the right can be used to find the product of two numbers. After going through this online math game students will gain a greater understanding of basic multiplication. The teacher then draws a rectangle on the board and labels it as shown below.
Multiplying 2-Digit Numbers by Multiples of 10 8 3 Find the product of 60 and 26. Arrays and Multiplying 2-Digit Numbers by Multiples of 10 You can use an array to find the product of 20 32. Once students understand patterns when multiplying by 10 they learn a short cut that can help multiply 2-digit numbers by multiples of 10.
However with large arrays we can divide the rectangle into smaller arrays using landmark numbers. 3NBT1 Use place value understanding to round whole numbers to the nearest 10 or 100. Label the other section 60 6.
6 x 10 60 x 10 12 x 2 12 x 20 120 x 20. Math problems are presented in a variety of formats in this fourth grade math activity including vertical multiplication problems horizontal multiplication problems and multiplication word problems. Next use problems from the Double Digit Multiplication worksheet to use place value when multiplying multi-digit numbers by two-digit numbers.
They travel from city to city a total of 8 times each day. 30 is 3 groups of 10. 40 24 4.
The teacher explains We can represent multiplication problems using arrays. 20 groups of 30 20 groups of 2 20 groups of 30 600 20 groups of 2 40 600 40 640 So 20 32 640. 20 42 40 2 20 Draw an array to find each product.
Numbers and Operations in Base Ten Students should demonstrate an understanding of place value and properties of operations to perform multi-digit arithmetic including multiplying one-digit whole numbers by multiples of 10 in the range 10-90. This video screencast was created with Doceri on an iPad. 10 34 2.
50 is 5 groups of 10. Break apart 26 into tens and ones. 30 33 5.
Illustrate and explain the calculation by using equations rectangular arrays andor area modelsThis. I take volunteers to answer the questions. The companys budget allows for 28000 total miles for February.
Arrays and Multiplying 2-Digit Numbers by Multiples of 10 Find each product. Draw one factor with base ten notation in a horizontal line. Point out as you draw that a 10 rod times a 10 rod would be drawn as a 100 because 10 x 10.
Label one section 60 20. Then draw the second factor in a vertical line see related media for an example. Use the table to work on problems in which double-digit numbers are multiplied by single-digit numbers using problems from the Multiplication with Regrouping or Mammoth Multiplication Problems worksheets.
Also when you multiply by multiples of 100 you add 2 zeros because the multiple of 100 has 2. What are the two numbers. In the month of February there are 28 days.
Use them to create a math center play scoot or as part of y. Plan your 60-minute lesson in Math or Number Sense and Operations with helpful tips from Rose Monroe. We call these numbers multiples of ten because we can think of them as numbers of groups of ten.
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