Adding Tens and Ones
We will learn adding tens and ones.
Write in expanded form and find the sum and arrange the numbers in columns. Add the digits in ones and tens column.
1. Add the following digits in ones and tens column. One has been done for you.
|
(i) |
43 = 4 tens + 3 ones 14 = 1 tens + 4 ones 57 = 5 tens + 7 ones |
T O 4 3 1 4 5 7 |
|
(ii) |
26 = __ tens + __ ones 52 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(iii) |
51 = __ tens + __ ones 27 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(iv) |
83 = __ tens + __ ones 14 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(v) |
37 = __ tens + __ ones 52 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(vi) |
26 = __ tens + __ ones 61 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(vii) |
11 = __ tens + __ ones 77 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(viii) |
55 = __ tens + __ ones 32 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(ix) |
26 = __ tens + __ ones 62 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
|
(x) |
67 = __ tens + __ ones 21 = __ tens + __ ones __________________________ __ = __ tens + __ ones __________________________ |
T O __ __ __ __ ____________ __ __ ____________ |
Addition of a 2-digit and a 1-digit numbers.
1. Find the sum of the following: One has been done for you.
|
(i) |
T O 5 4 + 3 5 7 |
(ii) |
T O 4 6 + 2
|
|
(iii) |
T O 7 8 + 1
|
(iv) |
T O 3 2 + 6
|
|
(v) |
T O 1 7 + 2
|
(vi) |
T O 4 3 + 4
|
|
(vii) |
T O 6 2 + 6
|
(viii) |
T O 9 1 + 7
|
|
(ix) |
T O 7 1 + 5
|
(x) |
T O 9 5 + 4
|
Addition of two 2-digit numbers.
2. Find the sum of the following: One has been done for you.
|
(i) |
T O 1 6 + 7 3 8 9 |
(ii) |
T O 2 3 + 4 5 ________ |
|
(iii) |
T O 7 3 + 2 4 ________ |
(iv) |
T O 3 5 + 4 1 ________ |
|
(v) |
T O 3 7 + 4 1 ________ |
(vi) |
T O 2 0 + 3 9 ________ |
|
(vii) |
T O 1 6 + 8 2 ________ |
(viii) |
T O 1 4 + 5 2 ________ |
|
(ix) |
T O 4 5 + 4 3 ________ |
(x) |
T O 1 7 + 7 2 ________ |
Addition of three 2-digit numbers.
3. Find the sum of the following: One has been done for you.
|
(i) |
T O 2 3 3 0 + 4 2 9 5 |
(ii) |
T O 3 5 4 0 + 1 3 ________ |
|
(iii) |
T O 5 2 2 3 + 2 1 ________ |
(iv) |
T O 4 3 1 3 + 3 2 ________ |
|
(v) |
T O 4 0 2 7 + 3 2 ________ |
(vi) |
T O 4 6 3 2 + 2 1 ________ |
|
(vii) |
T O 3 1 2 0 + 1 9 ________ |
(viii) |
T O 4 2 1 4 + 3 2 ________ |
|
(ix) |
T O 2 2 5 6 + 2 1 ________ |
(x) |
T O 1 5 5 1 + 1 2 ________ |
First Grade Math Activities
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