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
33 + 20 = ______
80 + 20 = ______
42 + 20 = ______
4 × 10 = ______
51 + 10 = ______
6 × 10 = ______
2 × 10 = ______
91 − 10 = ______
60 + 20 = ______
30 + 10 = ______
22 − 10 = ______
36 + 10 = ______
70 − 10 = ______
72 − 10 = ______
76 − 10 = ______
34 + 10 = ______
56 + 20 = ______
7 × 10 = ______
5 × 10 = ______
96 − 10 = ______
