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
26 − 10 = ______
12 + 20 = ______
83 + 20 = ______
2 × 10 = ______
22 + 10 = ______
69 + 20 = ______
99 − 10 = ______
54 + 20 = ______
85 + 20 = ______
58 + 10 = ______
30 + 10 = ______
81 + 10 = ______
84 + 20 = ______
5 × 10 = ______
7 × 10 = ______
41 − 10 = ______
40 − 10 = ______
74 − 10 = ______
81 + 20 = ______
4 × 10 = ______
