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
56 − 10 = ______
4 × 10 = ______
80 + 10 = ______
74 − 10 = ______
27 + 10 = ______
9 × 10 = ______
30 + 20 = ______
61 + 20 = ______
34 − 10 = ______
26 + 10 = ______
19 + 10 = ______
51 + 10 = ______
8 × 10 = ______
27 − 10 = ______
24 + 20 = ______
44 − 10 = ______
7 × 10 = ______
57 + 10 = ______
77 + 20 = ______
49 + 20 = ______
