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
15 + 10 = ______
77 + 10 = ______
2 × 10 = ______
58 + 10 = ______
9 × 10 = ______
76 + 10 = ______
40 + 10 = ______
29 − 10 = ______
30 − 10 = ______
56 + 20 = ______
91 − 10 = ______
6 × 10 = ______
89 + 20 = ______
26 − 10 = ______
53 − 10 = ______
34 − 10 = ______
8 × 10 = ______
51 + 20 = ______
53 + 10 = ______
39 + 20 = ______
