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
3 × 10 = ______
2 × 10 = ______
43 + 10 = ______
22 + 10 = ______
42 + 10 = ______
31 − 10 = ______
7 × 10 = ______
27 + 10 = ______
73 + 20 = ______
12 + 20 = ______
39 + 20 = ______
58 + 10 = ______
67 + 10 = ______
45 − 10 = ______
74 + 10 = ______
55 + 10 = ______
40 − 10 = ______
56 + 10 = ______
6 × 10 = ______
26 − 10 = ______
