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
85 + 10 = ______
56 + 10 = ______
7 × 10 = ______
63 − 10 = ______
94 − 10 = ______
77 − 10 = ______
77 + 20 = ______
82 − 10 = ______
40 + 10 = ______
74 + 10 = ______
1 × 10 = ______
4 × 10 = ______
27 + 10 = ______
28 + 20 = ______
27 + 20 = ______
30 − 10 = ______
43 + 20 = ______
86 − 10 = ______
67 − 10 = ______
63 + 20 = ______
