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
6 × 10 = ______
70 + 20 = ______
30 + 10 = ______
80 − 10 = ______
42 + 20 = ______
66 − 10 = ______
54 + 20 = ______
1 × 10 = ______
80 + 20 = ______
71 + 10 = ______
26 − 10 = ______
24 + 20 = ______
54 − 10 = ______
8 × 10 = ______
29 − 10 = ______
45 − 10 = ______
89 + 20 = ______
88 − 10 = ______
4 × 10 = ______
19 + 20 = ______
