Adding +4 to sums of 20

Bruce Akitt
Flashcards by Bruce Akitt, updated more than 1 year ago
Bruce Akitt
Created by Bruce Akitt about 7 years ago
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Description

Developing immediate recall of all addition families to 10 + 4. Also practicing a rapid mental process to add +4 to a 2 digit number making a sum less than 20.

Resource summary

Question Answer
1 + 4 = ___ 1 + 4 = _5_
4 + 1 = ___ 4 + 1 = _5_
1 + ___ = 5 1 + _4_ = 5
___ + 4 = 5 _1_ + 4 = 5
2 + 4 = ___ 2 + 4 = _6_
4 + 2 = ___ 4 + 2 = _6_
2 + ___ = 6 2 + _4_ = 6
___ + 4 = 6 _2_ + 4 = 6
3 + 4 = ___ 3 + 4 = _7_
4 + 3 = ___ 4 + 3 = _7_
3 + ___ = 7 3 + _4_ = 7
___ + 4 = 7 _3_ + 4 = 7
4 + 4 = ___ 4 + 4 = _8_
___ + 4 = 8 _4_ + 4 = 8
4 + ___ = 8 4 + _4_ = 8
5 + 4 = ___ 5 + 4 = _9_
5 + ___ = 9 5 + _4_ = 9
6 + 4 = ___ 6 + 4 = _10_
6 + ___ = 10 6 + _4_ = 10
7 + 4 = ___ 7 + 4 = _11_
7 + ___ = 11 7 + _4_ = 11
8 + 4 = ___ 8 + 4 = _12_
8 + ___ = 12 8 + _4_ = 12
9 + 4 = ___ 9 + 4 = 13
9 + ___ = 13 9 + _4_ = 13
10 + 4 = ___ 10 + 4 = _14_
10 + ___ = 14 10 + _4_ = 14
11 + 4 = ___ 11 + 4 = 10 + 5 = _15_
12 + 4 = ___ 12 + 4 = 10 + 6 = _16_
13 + 4 = ___ 13 + 4 = 10 + 7 = _17_
14 + 4 = ___ 14 + 4 = 10 + 8 = _18_
15 + 4 = ___ 15 + 4 = 10 + 9 = _19_
16 + 4 = ___ 16 + 4 = 10 + 10 = _20_
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