How To Make One Addend The Next Tens Number
Sums that Get Over to the Next Ten
This is a complete lesson with teaching and exercises about sums that "go over" or cross the side by side x, meant for 2nd grade. First, students utilize visual models (base ten blocks) to add a single digit number and a two-digit number where the sum exceeds the next whole ten (such as 28 + 5). The idea is to detect that these sums are like to single-digit improver facts. And then they do the same without visual models, breaking downwards the unmarried-digit number into two parts (first part completes the ten). The lesson also contains word issues and pattern exercises.
| Sums that go over to the adjacent ten | |
| Let'south add 59 + 5 so that we first complete 60. 59 + v 60 + four = 64 The v is broken into two parts: 1 and 4. |  9 and one brand a ten. 59 + 5 = 64 |
1. Circle ten little cubes to brand a ten. Count the tens and ones. Write the respond.
| a. 13 + nine = ______ | b. xv + 8 = ______ | c. 17 + 7 = ______ |
| d. 24 + seven = ______ | e. 25 + 6 = ______ | f. 37 + 9 = ______ |
| g. 36 + half-dozen = ______ | h. 48 + 4 = ______ | i. 58 + v = ______ |
ii. Complete. Intermission the 2nd number into two parts then that you complete the adjacent ten.
| a. 28 + viii 28 + 2 + ____ xxx + ____ = ______ | b. 47 + v 47 + 3 + ____ 50 + ____ = ______ | c. 79 + nine / \ 79 + ____ + ____ 80 + ____ = ______ |
| d. 39 + three 39 + ____ + ____ forty + ____ = ______ | e. 27 + v 27 + ____ + ____ ______ + ____ = _____ | f. 38 + 7 / \ 38 + ____ + ____ ______ + ____ = _____ |
3. Write the additions that the number line pictures illustrate. Retrieve how long each line is.
| a. ____ + ____ = ________ |
| b. ____ + ____ = ________ |
iv. Testify these additions on the number line by drawing two lines.
| a. 19 + 7 = _____ |
| b. 14 + 18 = _____ |
5. Solve the bug. Write a number judgement for each problem, not but the answer.
| a. Benjamin wants to purchase a kite that costs $30. He has saved $22. How much more than money will he need? |
| b. Natasha had already saved $twenty. She earned $5 by selling eggs, and earned $five more for selling fruit. How much money does she have at present? |
| c. Mom bought 28 fruit trees and has planted eight of them. How many even so need planted? |
| d. Xxx-seven people attended Uncle Sam's 50th birthday political party. Thirty-two of them came before noon. How many came after noon? |
| eastward. Dad bought a bunch of forty grapes and ate half of them. Then, little sister ate seven grapes. How many are left at present? |
half-dozen. Go along the patterns. COMPARE the columns, and Find what is the same.
| a. viii + ane = _______ 8 + 2 = _______ viii + 3 = _______ 8 + 4 = _______ viii + ____ = _______ eight + ____ = _______ | b. 28 + 1 = _______ 28 + 2 = _______ 28 + iii = _______ 28 + four = _______ 28 + ____ = _______ 28 + ____ = _______ | c. 78 + one = _______ 78 + 2 = _______ 78 + 3 = _______ 78 + 4 = _______ 78 + ____ = _______ 78 + ____ = _______ |
This lesson is taken from Maria Miller's book Math Mammoth Add & Subtract 2B, and posted at world wide web.HomeschoolMath.net with permission from the author. Copyright © Maria Miller. The lesson addresses the following Common Core standards for 2d grade: ii.OA.one, 2.NBT.five, and ii.MD.6.
Source: https://www.homeschoolmath.net/teaching/a/going_next_ten.php
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