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
53 + 20 = ______
4 × 10 = ______
99 − 10 = ______
7 × 10 = ______
35 + 20 = ______
20 + 20 = ______
14 + 20 = ______
6 × 10 = ______
31 − 10 = ______
63 − 10 = ______
8 × 10 = ______
12 + 20 = ______
76 + 20 = ______
74 − 10 = ______
43 − 10 = ______
58 + 20 = ______
60 + 20 = ______
3 × 10 = ______
30 + 10 = ______
80 − 10 = ______
