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
38 + 20 = ______
72 − 10 = ______
4 × 10 = ______
65 + 10 = ______
1 × 10 = ______
56 − 10 = ______
58 − 10 = ______
7 × 10 = ______
28 + 10 = ______
99 − 10 = ______
80 − 10 = ______
31 + 20 = ______
68 + 10 = ______
48 + 10 = ______
83 + 20 = ______
60 + 20 = ______
64 − 10 = ______
56 + 10 = ______
45 − 10 = ______
57 + 20 = ______
