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
71 + 10 = ______
56 − 10 = ______
29 + 10 = ______
4 × 10 = ______
49 − 10 = ______
9 × 10 = ______
2 × 10 = ______
74 − 10 = ______
32 + 20 = ______
36 + 10 = ______
91 − 10 = ______
7 × 10 = ______
19 + 10 = ______
92 − 10 = ______
18 + 10 = ______
85 + 20 = ______
93 − 10 = ______
65 − 10 = ______
65 + 20 = ______
88 + 20 = ______
