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
78 + 10 = ______
31 + 10 = ______
76 + 10 = ______
48 + 20 = ______
1 × 10 = ______
38 − 10 = ______
67 − 10 = ______
44 − 10 = ______
6 × 10 = ______
22 − 10 = ______
44 + 20 = ______
4 × 10 = ______
75 + 20 = ______
36 − 10 = ______
25 + 10 = ______
29 + 10 = ______
5 × 10 = ______
73 + 20 = ______
56 + 10 = ______
28 + 20 = ______
