Multiplying 3-Digit Numbers by 2-Digit Numbers
We will learn how to multiply 3-digit numbers by 2-digit numbers.
Multiplication by 3-Digit Numbers × 2-Digit Numbers:
I. Multiply 148 by 18.
|
Th H T O 4 1 8 × 1 8 3 3 4 4 1. + 4 1 8 0 2. 7 5 2 4 3. |
1. 18 = 1 ten and 8 ones Multiply 8 ones by all the numbers 418 × 8 ones = 3344 ones 2. Multiply 1 ten by all the numbers 418 × 1 ten = 418 tens = 4180 3. Add the two products [1. + 2.] 3344 + 4180 = 7524 |
II. Multiply 354 by 24.
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Th H T O 3 5 4 × 2 4 1 4 1 6 1. + 7 0 8 0 2. 8 4 9 6 3. |
1. 24 = 2 tens and 4 ones Multiply 4 ones by all the numbers 354 × 4 ones = 1416 ones 2. Multiply 2 tens by all the numbers 354 × 2 tens = 708 tens = 7080 3. Add the two products [1. + 2.] 1416 + 7080 = 8496 |
Questions and Answers on Multiplying 3-Digit Numbers by 2-Digit Numbers:
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(i) Th H T O 4 4 1 × 1 1 ______________ ______________ ______________ |
(ii) Th H T O 1 4 0 × 1 3 ______________ ______________ ______________ |
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(iii) Th H T O 4 2 0 × 1 6 ______________ ______________ ______________ |
(iv) Th H T O 5 0 3 × 1 2 ______________ ______________ ______________ |
|
(v) Th H T O 9 3 2 × 1 0 ______________ ______________ ______________ |
(vi) Th H T O 6 2 9 × 1 3 ______________ ______________ ______________ |
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(vii) Th H T O 8 3 7 × 1 1 ______________ ______________ ______________ |
(viii) Th H T O 3 3 2 × 2 0 ______________ ______________ ______________ |
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(ix) Th H T O 1 8 3 × 2 3 ______________ ______________ ______________ |
(x) Th H T O 2 5 1 × 2 7 ______________ ______________ ______________ |
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(xi) Th H T O 1 9 2 × 3 8 ______________ ______________ ______________ |
(xii) Th H T O 1 6 8 × 5 2 ______________ ______________ ______________ |
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