Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
14 + 20 = ______
57 + 20 = ______
28 + 20 = ______
36 + 20 = ______
48 − 10 = ______
56 − 10 = ______
6 × 10 = ______
4 × 10 = ______
13 + 10 = ______
58 + 20 = ______
92 − 10 = ______
27 − 10 = ______
9 × 10 = ______
21 + 10 = ______
85 − 10 = ______
7 × 10 = ______
69 − 10 = ______
38 + 20 = ______
82 + 20 = ______
51 + 20 = ______
