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
87 + 10 = ______
26 + 10 = ______
4 × 10 = ______
75 − 10 = ______
95 − 10 = ______
81 − 10 = ______
13 + 20 = ______
74 − 10 = ______
18 + 10 = ______
56 + 20 = ______
28 − 10 = ______
3 × 10 = ______
8 × 10 = ______
85 + 10 = ______
51 + 20 = ______
29 + 10 = ______
18 + 20 = ______
72 + 20 = ______
86 + 10 = ______
68 + 20 = ______
