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
76 + 20 = ______
30 − 10 = ______
81 + 10 = ______
43 + 10 = ______
7 × 10 = ______
9 × 10 = ______
1 × 10 = ______
8 × 10 = ______
28 + 20 = ______
37 − 10 = ______
84 − 10 = ______
64 + 20 = ______
40 + 10 = ______
63 + 10 = ______
69 + 20 = ______
22 − 10 = ______
38 + 10 = ______
71 + 20 = ______
3 × 10 = ______
69 + 10 = ______
